initial import of NetBSD tree

1 files changed, 257 insertions, 0 deletions

diff --git a/sys/arch/sun3/include/cg2reg.h b/sys/arch/sun3/include/cg2reg.h
new file mode 100644
index 00000000000..2fc9e29f2a8
--- /dev/null
+++ b/sys/arch/sun3/include/cg2reg.h
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+/*	$NetBSD: cg2reg.h,v 1.3 1995/04/07 02:54:43 gwr Exp $ */
+
+/*
+ * Copyright (c) 1994 Dennis Ferguson
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/* cg2reg.h - CG2 colour frame buffer definitions
+ *
+ * The mapped memory looks like:
+ *
+ *  offset     contents
+ * 0x000000  bit plane map - 1st (of 8) plane used by the X server in -mono mode
+ * 0x100000  pixel map - used by the X server in color mode
+ * 0x200000  raster op mode memory map - unused by X server
+ * 0x300000  random control registers (lots of spaces in between)
+ * 0x310000  shadow colour map
+ */
+
+/* Frame buffer memory size and depth */
+#define	CG2_FBSIZE	(1024 * 1024)
+#define	CG2_N_PLANE	8
+
+/* Screen dimensions */
+#define	CG2_WIDTH	1152
+#define	CG2_HEIGHT	900
+
+/* arrangement of bit plane mode memory */
+union bitplane {
+	u_short word[CG2_HEIGHT][CG2_WIDTH/(CG2_N_PLANE * sizeof(u_short))];
+	u_short plane[CG2_FBSIZE/(CG2_N_PLANE * sizeof(u_short))];
+};
+
+/* arrangement of pixel mode memory */
+union byteplane {
+	u_char pixel[CG2_HEIGHT][CG2_WIDTH];
+	u_char frame[CG2_FBSIZE];
+};
+
+
+/*
+ * Structure describing the first two megabytes of the frame buffer.
+ * Normal memory maps in bit plane and pixel modes
+ */
+struct cg2memfb {
+	union bitplane memplane[CG2_N_PLANE];	/* bit plane map */
+	union byteplane pixplane;		/* pixel map */
+};
+
+
+/*
+ * Control/status register.  The X server only appears to use update_cmap
+ * and video_enab.
+ */
+struct cg2statusreg {
+	u_int reserved : 2;	/* not used */
+        u_int fastread : 1;	/* r/o: has some feature I don't understand */
+        u_int id : 1;		/* r/o: ext status and ID registers exist */
+        u_int resolution : 4;	/* screen resolution, 0 means 1152x900 */
+        u_int retrace : 1;	/* r/o: retrace in progress */
+        u_int inpend : 1;	/* r/o: interrupt request */
+        u_int ropmode : 3;	/* ?? */
+        u_int inten : 1;	/* interrupt enable (for end of retrace) */
+        u_int update_cmap : 1;	/* copy/use shadow colour map */
+        u_int video_enab : 1;	/* enable video */
+};
+
+
+/*
+ * Extended status register.  Unused by X server
+ */
+struct cg2_extstatus {
+	u_int gpintreq : 1;	/* interrupt request */
+	u_int gpintdis : 1;	/* interrupt disable */
+	u_int reserved : 13;	/* unused */
+	u_int gpbus : 1;	/* bus enabled */
+};
+
+
+/*
+ * Double buffer control register.  It appears that (some of?) the
+ * cg2 cards support a pair of memory sets, referred to as `A' and
+ * `B', which can be swapped to allow atomic screen updates.  This
+ * controls them.
+ */
+struct dblbufreg {
+	u_int display_b : 1;	/* display memory B (set) or A (reset) */
+	u_int read_b : 1;	/* accesss memory B (set) or A (reset) */
+	u_int nowrite_b : 1;	/* when set, writes don't update memory B */
+	u_int nowrite_a : 1;	/* when set, writes don't update memory A */
+	u_int read_ecmap : 1;	/* copy from(clear)/to(set) shadow colour map */
+	u_int fast_read : 1;	/* fast reads, but wrong data */
+	u_int wait : 1;		/* when set, remains so to end up v. retrace */
+	u_int update_ecmap : 1;	/* copy/use shadow colour map */
+        u_int reserved : 8;
+};
+
+
+/*
+ * Zoom register, apparently present on Sun-2 colour boards only.  See
+ * the Sun documentation, I don't know anyone who still has a Sun-2.
+ */
+struct cg2_zoom {
+	union {
+		u_int short reg;
+		u_char reg_pad[4096];
+	} wordpan;
+	union {
+		struct {
+			u_int unused  : 8;
+			u_int lineoff : 4;
+			u_int pixzoom : 4;
+		} reg;
+		u_short word;
+		u_char reg_pad[4096];
+	} zoom;
+        union {
+		struct {
+			u_int unused   : 8;
+			u_int lorigin  : 4;
+			u_int pixeloff : 4;
+		} reg;
+		u_short word;
+		u_char reg_pad[4096];
+	} pixpan;
+	union {
+		u_short reg;
+		u_char reg_pad[4096];
+	} varzoom;
+};
+
+
+/*
+ * Miscellany.  On the Sun-3 these registers exist in place of the above.
+ */
+struct cg2_nozoom {
+	union {				/* double buffer register (see above) */
+		struct dblbufreg reg;
+		u_short word;
+		u_char reg_pad[4096];
+	} dblbuf;
+	union {				/* start of dma window */
+		u_short reg;
+		u_char reg_pad[4096];
+	} dmabase;
+	union {				/* dma window size */
+		u_short reg;		/* actually 8 bits.  reg*16 == size */
+		u_char reg_pad[4096];
+	} dmawidth;
+	union {				/* frame count */
+		u_short reg;		/* actually 8 bits only. r/o */
+		u_char reg_pad[4096];
+	} framecnt;
+};
+
+
+/*
+ * Raster op control registers.  X doesn't use this, but documented here
+ * for future reference.
+ */
+struct memropc {
+	u_short mrc_dest;
+	u_short mrc_source1;
+	u_short mrc_source2;
+	u_short mrc_pattern;
+	u_short mrc_mask1;
+	u_short mrc_mask2;
+	u_short mrc_shift;
+	u_short mrc_op;
+	u_short mrc_width;
+	u_short mrc_opcount;
+	u_short mrc_decoderout;
+	u_short mrc_x11;
+	u_short mrc_x12;
+	u_short mrc_x13;
+	u_short mrc_x14;
+	u_short mrc_x15;
+};
+
+
+/*
+ * Last chunk of the frame buffer (i.e. from offset 0x200000 and above).
+ * Exists separately from struct cg2memfb apparently because Sun software
+ * avoids mapping the latter, though X uses it.
+ */
+struct cg2fb {
+
+#ifndef	_KERNEL	/* XXX - Hack! */
+	/* XXX - Don't want this permanently in the kernel mapping. */
+	union {			/* raster op mode frame memory */
+		union bitplane ropplane[CG2_N_PLANE];
+		union byteplane roppixel;
+	} ropio;
+#endif	/* _KERNEL	XXX - Hack! */
+
+	union {			/* raster op control unit (1 per plane) */
+		struct memropc ropregs;
+		struct {
+			u_char pad[2048];
+			struct memropc ropregs;
+		} prime;
+		u_char reg_pad[4096];
+	} ropcontrol[9];
+	union {			/* status register */
+		struct cg2statusreg reg;
+		u_short word;
+		u_char reg_pad[4096];
+	} status;
+	union {			/* per-plane mask register */
+		u_short reg;	/* 8 bit mask register - set means plane r/w */
+		u_char reg_pad[4096];
+	} ppmask;
+	union {			/* miscellaneous registers */
+		struct cg2_zoom zoom;
+		struct cg2_nozoom nozoom;
+	} misc;
+	union {			/* interrupt vector */
+		u_short reg;
+		u_char reg_pad[32];
+	} intrptvec;
+	union {			 /* board ID */
+		u_short reg;
+		u_char reg_pad[16];
+	} id;
+	union {			 /* extended status */
+		struct cg2_extstatus reg;
+		u_short word;
+		u_char reg_pad[16];
+	} extstatus;
+	union {			 /* auxiliary raster op mode register (?)*/
+		u_short reg;
+		u_char reg_pad[4032];
+	} ropmode;
+	u_short redmap[256];	/* shadow colour maps */
+	u_short greenmap[256];
+	u_short bluemap[256];
+};