1/* $NetBSD: rasops4.c,v 1.28 2019/08/14 00:51:10 rin Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: rasops4.c,v 1.28 2019/08/14 00:51:10 rin Exp $"); 34 35#ifdef _KERNEL_OPT 36#include "opt_rasops.h" 37#endif 38 39#include <sys/param.h> 40 41#include <machine/endian.h> 42 43#include <dev/wscons/wsdisplayvar.h> 44#include <dev/wscons/wsconsio.h> 45 46#define _RASOPS_PRIVATE 47#define RASOPS_DEPTH 4 48#include <dev/rasops/rasops.h> 49#include <dev/rasops/rasops_masks.h> 50 51static void rasops4_copycols(void *, int, int, int, int); 52static void rasops4_erasecols(void *, int, int, int, long); 53static void rasops4_do_cursor(struct rasops_info *); 54static void rasops4_putchar(void *, int, int col, u_int, long); 55#ifndef RASOPS_SMALL 56static void rasops4_putchar8(void *, int, int col, u_int, long); 57static void rasops4_putchar12(void *, int, int col, u_int, long); 58static void rasops4_putchar16(void *, int, int col, u_int, long); 59static void rasops4_makestamp(struct rasops_info *, long); 60#endif 61 62#ifndef RASOPS_SMALL 63/* stamp for optimized character blitting */ 64static uint16_t stamp[16]; 65static long stamp_attr; 66static struct rasops_info *stamp_ri; 67 68/* 69 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 70 * destination = STAMP_READ(offset) 71 */ 72#define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 4 : (fb)) 73#define STAMP_MASK 0xf 74#define STAMP_READ(o) stamp[o] 75#endif 76 77/* 78 * Initialize rasops_info struct for this colordepth. 79 */ 80void 81rasops4_init(struct rasops_info *ri) 82{ 83 84 if ((ri->ri_font->fontwidth & 1) != 0) { 85 ri->ri_ops.erasecols = rasops4_erasecols; 86 ri->ri_ops.copycols = rasops4_copycols; 87 ri->ri_do_cursor = rasops4_do_cursor; 88 } 89 90 switch (ri->ri_font->fontwidth) { 91#ifndef RASOPS_SMALL 92 case 8: 93 ri->ri_ops.putchar = rasops4_putchar8; 94 break; 95 case 12: 96 ri->ri_ops.putchar = rasops4_putchar12; 97 break; 98 case 16: 99 ri->ri_ops.putchar = rasops4_putchar16; 100 break; 101#endif /* !RASOPS_SMALL */ 102 default: 103 ri->ri_ops.putchar = rasops4_putchar; 104 return; 105 } 106 107#ifndef RASOPS_SMALL 108 stamp_attr = -1; 109 stamp_ri = NULL; 110#endif 111} 112 113#ifndef RASOPS_SMALL 114/* 115 * Recompute the blitting stamp. 116 */ 117static void 118rasops4_makestamp(struct rasops_info *ri, long attr) 119{ 120 int i; 121 uint32_t bg, fg; 122 123 stamp_attr = attr; 124 stamp_ri = ri; 125 126 bg = ATTR_BG(ri, attr) & 0xf; 127 fg = ATTR_FG(ri, attr) & 0xf; 128 129 for (i = 0; i < 16; i++) { 130#if BYTE_ORDER == LITTLE_ENDIAN 131 if ((ri->ri_flg & RI_BSWAP) == 0) 132#else 133 if ((ri->ri_flg & RI_BSWAP) != 0) 134#endif 135 { 136 /* little endian */ 137 stamp[i] = (i & 1 ? fg : bg) << 12; 138 stamp[i] |= (i & 2 ? fg : bg) << 8; 139 stamp[i] |= (i & 4 ? fg : bg) << 4; 140 stamp[i] |= (i & 8 ? fg : bg) << 0; 141 } else { 142 /* big endian */ 143 stamp[i] = (i & 1 ? fg : bg) << 0; 144 stamp[i] |= (i & 2 ? fg : bg) << 4; 145 stamp[i] |= (i & 4 ? fg : bg) << 8; 146 stamp[i] |= (i & 8 ? fg : bg) << 12; 147 } 148 } 149} 150 151/* 152 * Width-optimized putchar functions 153 */ 154#define RASOPS_WIDTH 8 155#include <dev/rasops/rasops_putchar_width.h> 156#undef RASOPS_WIDTH 157 158#define RASOPS_WIDTH 12 159#include <dev/rasops/rasops_putchar_width.h> 160#undef RASOPS_WIDTH 161 162#define RASOPS_WIDTH 16 163#include <dev/rasops/rasops_putchar_width.h> 164#undef RASOPS_WIDTH 165 166#endif /* !RASOPS_SMALL */ 167 168/* rasops4_putchar */ 169#undef RASOPS_AA 170#include <dev/rasops/rasops1-4_putchar.h> 171 172/* 173 * Grab routines common to depths where (bpp < 8) 174 */ 175#include <dev/rasops/rasops_bitops.h> 176