From f07a4c844da9f0ecae5bbee1ab94be56505f26f7 Mon Sep 17 00:00:00 2001
From: Thomas Bushnell <thomas@gnu.org>
Date: Tue, 25 Feb 1997 21:28:37 +0000
Subject: Initial source

---
 chips/sfb_misc.c | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 chips/sfb_misc.c

(limited to 'chips/sfb_misc.c')

diff --git a/chips/sfb_misc.c b/chips/sfb_misc.c
new file mode 100644
index 0000000..a51e9a4
--- /dev/null
+++ b/chips/sfb_misc.c
@@ -0,0 +1,133 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1992 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File: sfb_misc.c
+ * 	Author: Alessandro Forin, Carnegie Mellon University
+ *	Date: 11/92
+ *
+ *	Driver for the PMAGB-BA smart color framebuffer
+ *
+ */
+
+#include <sfb.h>
+#if	(NSFB > 0)
+#include <platforms.h>
+
+/*
+ * NOTE: This driver relies heavily on the pm one, as well as the cfb.
+ */
+
+#include <device/device_types.h>
+#include <chips/screen_defs.h>
+#include <chips/pm_defs.h>
+typedef pm_softc_t	sfb_softc_t;
+
+#include <chips/bt459.h>
+#define	bt459		cursor_registers
+
+#ifdef	DECSTATION
+#include <mips/PMAX/pmagb_ba.h>
+#endif
+
+#ifdef	FLAMINGO
+#include <mips/PMAX/pmagb_ba.h>		/* XXXX */
+#endif
+
+/*
+ * Initialize color map, for kernel use
+ */
+#define	sfb_init_colormap		cfb_init_colormap
+
+/*
+ * Position cursor
+ */
+sfb_pos_cursor(
+	bt459_regmap_t	*regs,
+	int		x,
+	int		y)
+{
+	bt459_pos_cursor( regs, x + 368 - 219, y + 37 - 34);
+}
+
+/*
+ * Large viz small cursor
+ */
+#define	sfb_small_cursor_to_large	cfb_small_cursor_to_large
+
+/*
+ * Device-specific set status
+ */
+#define sfb_set_status			cfb_set_status
+
+/*
+ * Hardware initialization
+ */
+sfb_init_screen(
+	sfb_softc_t *sfb)
+{
+	bt459_init( sfb->bt459,
+		    sfb->bt459 + (SFB_OFFSET_RESET - SFB_OFFSET_BT459),
+		    4 /* 4:1 MUX */);
+}
+
+/*
+ * Do what's needed when X exits
+ */
+sfb_soft_reset(
+	screen_softc_t	sc)
+{
+	sfb_softc_t	*sfb = (sfb_softc_t*) sc->hw_state;
+	user_info_t	*up =  sc->up;
+	extern cursor_sprite_t	dc503_default_cursor;
+
+	/*
+	 * Restore params in mapped structure
+	 */
+	pm_init_screen_params(sc,up);
+	up->row = up->max_row - 1;
+
+	up->dev_dep_2.pm.x26 = 2; /* you do not want to know */
+	up->dev_dep_1.pm.x18 = (short*)2;
+
+	/*
+	 * Restore RAMDAC chip to default state
+	 */
+	sfb_init_screen(sfb);
+
+	/*
+	 * Load kernel's cursor sprite: just use the same pmax one
+	 */
+	sfb_small_cursor_to_large(up, dc503_default_cursor);
+	bt459_cursor_sprite(sfb->bt459, up->dev_dep_2.pm.cursor_sprite);
+
+	/*
+	 * Color map and cursor color
+	 */
+	sfb_init_colormap(sc);
+}
+
+
+#endif	(NSFB > 0)
-- 
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