/* $NetBSD: cgsix.c,v 1.42 1998/04/07 20:18:18 pk Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Paul Kranenburg. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /* * 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. * * 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. * 3. 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, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)cgsix.c 8.4 (Berkeley) 1/21/94 */ /* * color display (cgsix) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include "opt_uvm.h" #include #include #include #include #include #include #include #include #include #include #ifdef DEBUG #include #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void cg6_unblank __P((struct device *)); /* cdevsw prototypes */ cdev_decl(cgsix); extern struct cfdriver cgsix_cd; /* frame buffer generic driver */ static struct fbdriver cg6_fbdriver = { cg6_unblank, cgsixopen, cgsixclose, cgsixioctl, cgsixpoll, cgsixmmap }; /* * Unlike the bw2 and cg3 drivers, we do not need to provide an rconsole * interface, as the cg6 is fast enough.. but provide a knob to turn it * on anyway. */ #ifdef RASTERCONSOLE int cgsix_use_rasterconsole = 0; #endif 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 */ void cg6attach(sc, name, isconsole, isfb) struct cgsix_softc *sc; char *name; int isconsole; int isfb; { int i; volatile struct bt_regs *bt = sc->sc_bt; struct fbdevice *fb = &sc->sc_fb; fb->fb_driver = &cg6_fbdriver; /* Don't have to map the pfour register on the cgsix. */ fb->fb_pfour = NULL; fb->fb_type.fb_cmsize = 256; fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; printf(": %s, %d x %d", name, fb->fb_type.fb_width, fb->fb_type.fb_height); 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; if (isconsole) { printf(" (console)"); #ifdef RASTERCONSOLE if (cgsix_use_rasterconsole) fbrcons_init(&sc->sc_fb); #endif } printf("\n"); if (isfb) fb_attach(&sc->sc_fb, isconsole); } int cgsixopen(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { int unit = minor(dev); if (unit >= cgsix_cd.cd_ndevs || cgsix_cd.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 = cgsix_cd.cd_devs[minor(dev)]; cg6_reset(sc); return (0); } int cgsixioctl(dev, cmd, data, flags, p) dev_t dev; u_long cmd; caddr_t data; int flags; struct proc *p; { struct cgsix_softc *sc = cgsix_cd.cd_devs[minor(dev)]; u_int count; int 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 defined(UVM) if (!uvm_useracc(p->image, count, B_READ) || !uvm_useracc(p->mask, count, B_READ)) return (EFAULT); #else if (!useracc(p->image, count, B_READ) || !useracc(p->mask, count, B_READ)) return (EFAULT); #endif } /* 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(0x%lx) (%s[%d])\n", cmd, p->p_comm, p->p_pid); #endif return (ENOTTY); } return (0); } int cgsixpoll(dev, events, p) dev_t dev; int events; struct proc *p; { return (seltrue(dev, events, p)); } /* * Clean up hardware state (e.g., after bootup or after X crashes). */ static void cg6_reset(sc) struct cgsix_softc *sc; { volatile struct cg6_tec_xxx *tec; int fhc; 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) 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) struct cgsix_softc *sc; { volatile struct cg6_thc *thc; u_int edgemask, m; 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) struct cgsix_softc *sc; int start, ncolors; { volatile struct bt_regs *bt; u_int *ip, i; 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) struct cgsix_softc *sc; { volatile struct bt_regs *bt; 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 cgsixmmap(dev, off, prot) dev_t dev; int off, prot; { struct cgsix_softc *sc = cgsix_cd.cd_devs[minor(dev)]; struct mmo *mo; u_int u, sz; static struct mmo mmo[] = { { CG6_USER_RAM, 0, CGSIX_RAM_OFFSET }, /* do not actually know how big most of these are! */ { CG6_USER_FBC, 1, CGSIX_FBC_OFFSET }, { CG6_USER_TEC, 1, CGSIX_TEC_OFFSET }, { CG6_USER_BTREGS, 8192 /* XXX */, CGSIX_BT_OFFSET }, { CG6_USER_FHC, 1, CGSIX_FHC_OFFSET }, { CG6_USER_THC, sizeof(struct cg6_thc), CGSIX_THC_OFFSET }, { CG6_USER_ROM, 65536, CGSIX_ROM_OFFSET }, { CG6_USER_DHC, 1, CGSIX_DHC_OFFSET }, }; #define NMMO (sizeof mmo / sizeof *mmo) if (off & PGOFSET) panic("cgsixmmap"); /* * 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) { bus_space_handle_t bh; if (bus_space_mmap(sc->sc_bustag, sc->sc_btype, sc->sc_paddr+u+mo->mo_physoff, BUS_SPACE_MAP_LINEAR, &bh)) return (-1); return ((int)bh); } } #ifdef DEBUG { struct proc *p = curproc; /* XXX */ log(LOG_NOTICE, "cgsixmmap(0x%x) (%s[%d])\n", off, p->p_comm, p->p_pid); } #endif return (-1); /* not a user-map offset */ }