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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1983,1987,1997-1998 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _SYS_MEMREG_H
#define _SYS_MEMREG_H
#pragma ident "%Z%%M% %I% %E% SMI" /* SunOS4.1.2 1.16 */
#ifdef __cplusplus
extern "C" {
#endif
/*
* Rasterop hardware registers. To do a rasterop set the
* rasterop function in mrc_op. Clear mrc_pattern unless
* a special pattern is desired.
*
* Set mrc_shift to cause the source to be properly
* aligned with the destination: if words are being processed
* left-to-right, then mrc_shift should be a positive number
* between 0 and 15 inclusive; if words are being processed
* right-to-left, then mrc_shift should be a negative number
* between -16 and -1 inclusive. If the first source word
* does not supply enough data to satisfy the first destination
* words requirements then load mrc_source1 (in the left-to-right
* case) or mcr_source2 (in the right-to-left case) with the
* first source word.
*
* Load mrc_mask1 with a mask of the bits not contributed by
* the first source word (if the width were large), i.e. a
* mask of high-order bits. Load mrc_mask2 with a mask of the
* bits not contributed by the last source word, i.e. a mask
* of low-order bits. Set mrc_width to the number of words
* in the destination line.
*
* Then enable the chip and stuff the data through it and
* finally disable the chip.
*/
struct memropc {
ushort_t mrc_dest; /* destination register */
ushort_t mrc_source1; /* source1 register (right) */
ushort_t mrc_source2; /* source2 register (left) */
ushort_t mrc_pattern; /* pattern register */
ushort_t mrc_mask1; /* mask1 register */
ushort_t mrc_mask2; /* mask2 register */
short mrc_shift; /* bit 0..3 shift count for source */
/* bit 8 sourceload bit */
short mrc_op; /* function */
short mrc_width; /* word width */
short mrc_opcount; /* counts down the width */
short mrc_decoderout; /* decoder output */
short mrc_x11; /* manual load destination (diag) */
short mrc_x12; /* manual load source (diag) */
short mrc_x13;
short mrc_x14;
short mrc_x15; /* flags register for applications */
};
/* note: these are not relevant to color boards */
#define mrc_enable(mrc) ((mrc)->mrc_shift |= (ushort_t)0x100)
#define mrc_disable(mrc) ((mrc)->mrc_shift &= ~(ushort_t)0x100)
/* macros for generating left (mask1) and right (mask2) masks */
#define mrc_lmask(x) ((unsigned)0xffff0000 >> (x))
#define mrc_rmask(x) ((unsigned)0x7fff >> (x))
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MEMREG_H */
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