From e511a52691ddb2290f5d3c9ca6e9f0fc3b320289 Mon Sep 17 00:00:00 2001
From: Theo de Raadt <deraadt@cvs.openbsd.org>
Date: Sun, 11 Aug 1996 05:35:37 +0000
Subject: netbsd port, now we merge our changes back in

---
 sys/arch/sparc/dev/btreg.h | 62 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 61 insertions(+), 1 deletion(-)

(limited to 'sys/arch/sparc/dev/btreg.h')

diff --git a/sys/arch/sparc/dev/btreg.h b/sys/arch/sparc/dev/btreg.h
index a1f4692da60..aa3f5fbc0db 100644
--- a/sys/arch/sparc/dev/btreg.h
+++ b/sys/arch/sparc/dev/btreg.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: btreg.h,v 1.2 1994/11/20 20:51:55 deraadt Exp $ */
+/*	$NetBSD: btreg.h,v 1.4 1996/02/27 22:09:21 thorpej Exp $ */
 
 /*
  * Copyright (c) 1993
@@ -78,3 +78,63 @@ struct bt_regs {
 	u_int	bt_ctrl;		/* control register */
 	u_int	bt_omap;		/* overlay (cursor) map register */
 };
+#define BT_INIT(bt, shift) do { /* whatever this means.. */ \
+	(bt)->bt_addr = 0x06 << (shift);	/* command reg */ \
+	(bt)->bt_ctrl = 0x73 << (shift);	/* overlay plane */ \
+	(bt)->bt_addr = 0x04 << (shift);	/* read mask */ \
+	(bt)->bt_ctrl = 0xff << (shift);	/* color planes */ \
+} while(0)
+#define BT_UNBLANK(bt, x, shift) do { \
+	/* restore color 0 (and R of color 1) */ \
+	(bt)->bt_addr = 0 << (shift); \
+	(bt)->bt_cmap = (x); \
+	if ((shift)) { \
+		(bt)->bt_cmap = (x) << 8; \
+		(bt)->bt_cmap = (x) << 16; \
+	/* restore read mask */ \
+	BT_INIT((bt), (shift)); \
+} while(0)
+#define BT_BLANK(bt, shift) do { \
+	(bt)->bt_addr = 0x06 << (shift);	/* command reg */ \
+	(bt)->bt_ctrl = 0x70 << (shift);	/* overlay plane */ \
+	(bt)->bt_addr = 0x04 << (shift);	/* read mask */ \
+	(bt)->bt_ctrl = 0x00 << (shift);	/* color planes */ \
+	/* Set color 0 to black -- note that this overwrites R of color 1. */\
+	(bt)->bt_addr = 0 << (shift); \
+	(bt)->bt_cmap = 0 << (shift); \
+	/* restore read mask */ \
+	BT_INIT((bt), (shift)); \
+} while(0)
+
+
+/*
+ * Sbus framebuffer control look like this (usually at offset 0x400000).
+ */
+struct fbcontrol {
+	struct	bt_regs fbc_dac;
+	u_char	fbc_ctrl;
+	u_char	fbc_status;
+	u_char	fbc_cursor_start;
+	u_char	fbc_cursor_end;
+	u_char	fbc_vcontrol[12];	/* 12 bytes of video timing goo */
+};
+/* fbc_ctrl bits: */
+#define FBC_IENAB	0x80		/* Interrupt enable */
+#define FBC_VENAB	0x40		/* Video enable */
+#define FBC_TIMING	0x20		/* Master timing enable */
+#define FBC_CURSOR	0x10		/* Cursor compare enable */
+#define FBC_XTALMSK	0x0c		/* Xtal select (0,1,2,test) */
+#define FBC_DIVMSK	0x03		/* Divisor (1,2,3,4) */
+
+/* fbc_status bits: */
+#define FBS_INTR	0x80		/* Interrupt pending */
+#define FBS_MSENSE	0x70		/* Monitor sense mask */
+#define		FBS_1024X768	0x10
+#define		FBS_1152X900	0x30
+#define		FBS_1280X1024	0x40
+#define		FBS_1600X1280	0x50
+#define FBS_ID_MASK	0x0f		/* ID mask */
+#define		FBS_ID_COLOR	0x01
+#define		FBS_ID_MONO	0x02
+#define		FBS_ID_MONO_ECL	0x03	/* ? */
+
-- 
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