Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 509 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/sunLynx/sunLyUtil.c b/nx-X11/programs/Xserver/hw/sunLynx/sunLyUtil.c
new file mode 100644
index 000000000..e260acfee
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/sunLynx/sunLyUtil.c
@@ -0,0 +1,509 @@
+/* $Xorg: sunLyUtil.c,v 1.3 2000/08/17 19:48:37 cpqbld Exp $ */
+/*
+ * CG3 and CG6 utility functions for LynxOS, derived from NetBSD
+ * Copyright 1996 by Thomas Mueller
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Thomas Mueller not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Thomas Mueller makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THOMAS MUELLER BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/* $XFree86: xc/programs/Xserver/hw/sunLynx/sunLyUtil.c,v 3.1 1996/12/27 06:51:42 dawes Exp $ */
+
+/*      $NetBSD: bt_subr.c,v 1.4 1994/11/20 20:51:54 deraadt Exp $ */
+
+/*
+ * 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.
+ *
+ *      @(#)bt_subr.c   8.2 (Berkeley) 1/21/94
+ */
+
+/* adaption for LynxOS microSPARC 2.4.0 and X11R6[.1]
+ * Copyright 1996 by Thomas Mueller <tm@systrix.de>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Thomas Mueller not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Thomas Mueller makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THOMAS MUELLER BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "sun.h"
+#include "btreg.h"
+#include "btvar.h"
+#include "cgsixreg.h"
+#define useracc(a,b,c)  (1)
+
+/*
+ * Common code for dealing with Brooktree video DACs.
+ * (Contains some software-only code as well, since the colormap
+ * ioctls are shared between the cgthree and cgsix drivers.)
+ */
+
+/*
+ * Implement an FBIOGETCMAP-like ioctl.
+ */
+int
+bt_getcmap(struct fbcmap *p, union bt_cmap *cm, int cmsize)
+{
+    u_int i;
+    u_int start;
+    u_int count;
+    u_char *cp;
+
+    start = p->index;
+    count = p->count;
+    if (start >= cmsize || start + count > cmsize)
+	return (EINVAL);
+    if (!useracc(p->red, count, B_WRITE) ||
+	!useracc(p->green, count, B_WRITE) ||
+	!useracc(p->blue, count, B_WRITE))
+	return (EFAULT);
+    for (cp = &cm->cm_map[start][0], i = 0; i < count; cp += 3, i++) {
+	p->red[i] = cp[0];
+	p->green[i] = cp[1];
+	p->blue[i] = cp[2];
+    }
+    return (0);
+}
+
+/*
+ * Implement the software portion of an FBIOPUTCMAP-like ioctl.
+ */
+int
+bt_putcmap(struct fbcmap *p, union bt_cmap *cm, int cmsize)
+{
+    u_int i;
+    int start;
+    int count;
+    u_char *cp;
+
+    start = p->index;
+    count = p->count;
+    if (start >= cmsize || start + count > cmsize)
+	return (EINVAL);
+    if (!useracc(p->red, count, B_READ) ||
+	!useracc(p->green, count, B_READ) ||
+	!useracc(p->blue, count, B_READ))
+	return (EFAULT);
+    for (cp = &cm->cm_map[start][0], i = 0; i < count; cp += 3, i++) {
+	cp[0] = p->red[i];
+	cp[1] = p->green[i];
+	cp[2] = p->blue[i];
+    }
+    return (0);
+}
+
+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 */
+};
+
+static union bt_cmap sc_cmap;	/* local copy of LUT    */
+static int blanked = 1;		/* to jump-start it ... */
+static struct cg6_cursor sc_cursor;	/* cursor info		*/
+
+/*
+ * Clean up hardware state (e.g., after bootup or after X crashes).
+ */
+static void
+cg6_reset(fbFd * fb)
+{
+    volatile struct cg6_tec_xxx *tec;
+    int fhc;
+    short fhcrev;
+    volatile struct bt_regs *bt;
+
+    /* hide the cursor, just in case */
+    ((volatile struct cg6_thc *) (fb->thc))->thc_cursxy =
+	(THC_CURSOFF << 16) | THC_CURSOFF;
+
+    /* turn off frobs in transform engine (makes X11 work) */
+    tec = fb->tec;
+    tec->tec_mv = 0;
+    tec->tec_clip = 0;
+    tec->tec_vdc = 0;
+
+    /* take care of hardware bugs in old revisions */
+    fhcrev = (*(int *) fb->fhc >> FHC_REV_SHIFT) &
+	(FHC_REV_MASK >> FHC_REV_SHIFT);
+    if (fhcrev < 5) {
+	/*
+		 * Keep current resolution; set cpu to 68020, set test
+		 * window (size 1Kx1K), and for rev 1, disable dest cache.
+		 */
+	fhc = (*(int *) fb->fhc & FHC_RES_MASK) | FHC_CPU_68020 |
+	    FHC_TEST |
+	    (11 << FHC_TESTX_SHIFT) | (11 << FHC_TESTY_SHIFT);
+	if (fhcrev < 2)
+	    fhc |= FHC_DST_DISABLE;
+	*(int *) fb->fhc = fhc;
+    }
+    /* Enable cursor in Brooktree DAC. */
+    bt = fb->ramdac;
+    bt->bt_addr = 0x06 << 24;
+    bt->bt_ctrl |= 0x03 << 24;
+}
+
+static void
+cg6_loadcursor(fbFd * fb)
+{
+    volatile struct cg6_thc *thc;
+    u_int edgemask;
+    u_int 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_cursor.cc_size.x < 32)
+	edgemask = ~(edgemask >> sc_cursor.cc_size.x);
+    thc = (volatile struct cg6_thc *) fb->thc;
+    for (i = 0; i < 32; i++) {
+	m = sc_cursor.cc_bits[0][i] & edgemask;
+	thc->thc_cursmask[i] = m;
+	thc->thc_cursbits[i] = m & sc_cursor.cc_bits[1][i];
+    }
+}
+
+static void
+cg6_setcursor(fbFd * fb)
+{
+    /* we need to subtract the hot-spot value here */
+#define COORD(f) (sc_cursor.cc_pos.f - sc_cursor.cc_hot.f)
+    ((volatile struct cg6_thc *) (fb->thc))->thc_cursxy = sc_cursor.cc_enable ?
+    ((COORD(x) << 16) | (COORD(y) & 0xffff)) :
+    (THC_CURSOFF << 16) | THC_CURSOFF;
+#undef COORD
+}
+
+/*
+ * Load the cursor (overlay `foreground' and `background') colors.
+ */
+static void
+cg6_loadomap(fbFd * fb)
+{
+    volatile struct bt_regs *bt;
+    u_int i;
+
+    bt = (volatile struct bt_regs *) fb->ramdac;
+    bt->bt_addr = 0x01 << 24;	/* set background color */
+    i = 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_cursor.cc_color.cm_chip[1];
+    bt->bt_omap = i;		/* G */
+    bt->bt_omap = i << 8;	/* B */
+}
+
+/*
+ * Load a subset of the current (new) colormap into the color DAC.
+ */
+static void
+cg6_loadcmap(fbFd * fb, union bt_cmap *cm, int start, int ncolors)
+{
+    volatile struct bt_regs *bt;
+    u_int *ip;
+    u_int i;
+    int count;
+
+    ip = &cm->cm_chip[BT_D4M3(start)];	/* start/4 * 3 */
+    count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
+    bt = (struct bt_regs *) fb->ramdac;
+    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;
+    }
+}
+
+/*
+ * Undo the effect of an FBIOSVIDEO that turns the video off on a CG6
+ */
+static void
+cg6_unblank(fbFd * dev)
+{
+    volatile struct cg6_thc *thc = (volatile struct cg6_thc *) dev->thc;
+    unsigned long x;
+    unsigned long y;
+
+    if (blanked) {
+	thc->thc_misc = (thc->thc_misc & ~THC_MISC_VIDEN) | THC_MISC_VIDEN;
+    }
+    blanked = 0;
+}
+
+/*
+ * Load a subset of the current (new) colormap into the Brooktree DAC.
+ */
+static void
+cg3_loadcmap(fbFd * fb, union bt_cmap *cm, int start, int ncolors)
+{
+    volatile struct bt_regs *bt;
+    u_int *ip;
+    int count;
+
+    ip = &cm->cm_chip[BT_D4M3(start)];	/* start/4 * 3 */
+    count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
+    bt = (struct bt_regs *) fb->ramdac;
+    bt->bt_addr = BT_D4M4(start);
+    while (--count >= 0)
+	bt->bt_cmap = *ip++;
+}
+
+/*
+ * Undo the effect of an FBIOSVIDEO that turns the video off on a CG3
+ */
+static void
+cg3_unblank(fbFd * dev)
+{
+    volatile struct bt_regs *bt;
+
+    if (blanked) {
+	bt = (struct bt_regs *) dev->ramdac;
+	/* restore color 0 (and R of color 1) */
+	bt->bt_addr = 0;
+	bt->bt_cmap = sc_cmap.cm_chip[0];
+
+	/* restore read mask */
+	bt->bt_addr = 0x06;	/* command reg */
+	bt->bt_ctrl = 0x73;	/* overlay plane */
+	bt->bt_addr = 0x04;	/* read mask */
+	bt->bt_ctrl = 0xff;	/* color planes */
+    }
+    blanked = 0;
+}
+
+int
+sunIoctl(fbFd * fb, int cmd, void *arg)
+{
+    int error;
+    int v;
+    int i;
+    u_int count;
+    union cursor_cmap tcm;
+
+    switch (cmd) {
+    default:
+	errno = EINVAL;
+	return -1;
+    case FBIOPUTCMAP:
+#define q ((struct fbcmap *)arg)
+	if (error = bt_putcmap(q, &sc_cmap, 256))
+	    return error;
+	if (fb->thc) {		/* CG6 */
+	    cg6_loadcmap(fb, &sc_cmap, q->index, q->count);
+	} else {		/* CG3 */
+	    cg3_loadcmap(fb, &sc_cmap, q->index, q->count);
+	}
+	break;
+    case FBIOSVIDEO:
+	if (fb->thc) {		/* CG6 */
+	    if (*(int *) arg)
+		cg6_unblank(fb);
+	    else {
+		if (!blanked) {
+		    volatile struct cg6_thc *thc =
+		    (volatile struct cg6_thc *) fb->thc;
+
+		    thc->thc_misc = (thc->thc_misc & ~THC_MISC_VIDEN);
+		}
+		blanked = 1;
+	    }
+	} else {		/* CG3 */
+	    if (*(int *) arg)
+		cg3_unblank(fb);
+	    else {
+		if (!blanked) {
+		    volatile struct bt_regs *bt;
+
+		    bt = (struct bt_regs *) fb->ramdac;
+		    bt->bt_addr = 0x06;	/* command reg */
+		    bt->bt_ctrl = 0x70;	/* overlay plane */
+		    bt->bt_addr = 0x04;	/* read mask */
+		    bt->bt_ctrl = 0x00;	/* color planes */
+
+		    /*
+                     * Set color 0 to black -- note that this overwrites R of
+                     * color 1.
+                     */
+		    bt->bt_addr = 0;
+		    bt->bt_cmap = 0;
+
+		}
+		blanked = 1;
+	    }
+	}
+	break;
+/* these are for both FBIOSCURSOR and FBIOGCURSOR */
+#define p ((struct fbcursor *)arg)
+#define cc (&sc_cursor)
+
+    case FBIOSCURSOR:
+	if (!fb->thc) {		/* reject non CG6 */
+	    errno = EINVAL;
+	    return -1;
+	}
+	/*
+         * 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(fb);
+	}
+	if (v & FB_CUR_SETCMAP) {
+	    cc->cc_color = tcm;
+	    cg6_loadomap(fb);	/* 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(fb);
+	}
+	break;
+    case FBIOSCURPOS:
+	if (!fb->thc) {		/* reject non CG6 */
+	    errno = EINVAL;
+	    return -1;
+	}
+	sc_cursor.cc_pos = *(struct fbcurpos *) arg;
+	cg6_setcursor(fb);
+	break;
+
+    case FBIOGCURMAX:
+	if (!fb->thc) {		/* reject non CG6 */
+	    errno = EINVAL;
+	    return -1;
+	}
+	/* max cursor size is 32x32 */
+	((struct fbcurpos *) arg)->x = 32;
+	((struct fbcurpos *) arg)->y = 32;
+	break;
+    case FBIORESET:
+	if (!fb->thc) {		/* reject non CG6 */
+	    errno = EINVAL;
+	    return -1;
+	}
+	cg6_reset(fb);
+    }
+    return 0;
+}