sync code with last improvements from OpenBSD

2023-08-28 05:57:34 +00:00 · 2023-08-28 05:57:34 +00:00 · 88965415ff
commit 88965415ff
26235 changed files with 29195616 additions and 0 deletions
--- a/driver/xf86-video-mach64/src/atibank.c
+++ b/driver/xf86-video-mach64/src/atibank.c
@ -0,0 +1,114 @@
+/*
+ * Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
+ *
+ * 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 Marc Aurele La France not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  Marc Aurele La France makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as-is" without express or implied warranty.
+ *
+ * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO
+ * EVENT SHALL MARC AURELE LA FRANCE 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "ati.h"
+#include "atibank.h"
+#include "atimach64io.h"
+#include "atiwonderio.h"
+
+#ifndef AVOID_CPIO
+
+/*
+ * ATIx8800SetBank --
+ *
+ * Set an ATI 28800's, 68800's or 88800's read and write bank numbers.
+ */
+void
+ATIx8800SetBank
+(
+    ATIPtr       pATI,
+    unsigned int iBank
+)
+{
+    (void)iBank; /* always called with iBank = 0 */
+
+    ATIPutExtReg(0xB2U, 0x00U);
+    ATIModifyExtReg(pATI, 0xAEU, -1, (CARD8)(~0x0FU), 0x00U);
+}
+
+/*
+ * Functions to simulate a banked VGA aperture using a Mach64's small dual
+ * paged apertures.  There are two sets of these:  one for packed modes, the
+ * other for planar modes.
+ */
+
+static CARD32
+ATIMach64MassagePackedBankNumber
+(
+    CARD8 iBank
+)
+{
+    iBank <<= 1;
+    return ((iBank + 1) << 16) | iBank;
+}
+
+/*
+ * ATIMach64SetBankPacked --
+ *
+ * Set read and write bank numbers for small dual paged apertures.
+ */
+void
+ATIMach64SetBankPacked
+(
+    ATIPtr       pATI,
+    unsigned int iBank
+)
+{
+    CARD32 tmp = ATIMach64MassagePackedBankNumber(iBank);
+
+    outr(MEM_VGA_RP_SEL, tmp);
+    outr(MEM_VGA_WP_SEL, tmp);
+}
+
+static CARD32
+ATIMach64MassagePlanarBankNumber
+(
+    CARD8 iBank
+)
+{
+    iBank <<= 3;
+    return ((iBank + 4) << 16) | iBank;
+}
+
+/*
+ * ATIMach64SetBankPlanar --
+ *
+ * Set read and write bank numbers for small dual paged apertures.
+ */
+void
+ATIMach64SetBankPlanar
+(
+    ATIPtr       pATI,
+    unsigned int iBank
+)
+{
+    CARD32 tmp = ATIMach64MassagePlanarBankNumber(iBank);
+
+    outr(MEM_VGA_RP_SEL, tmp);
+    outr(MEM_VGA_WP_SEL, tmp);
+}
+
+#endif /* AVOID_CPIO */