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
51 static void rasops4_copycols(void *, int, int, int, int);
52 static void rasops4_erasecols(void *, int, int, int, long);
53 static void rasops4_do_cursor(struct rasops_info *);
54 static void rasops4_putchar(void *, int, int col, u_int, long);
55 #ifndef RASOPS_SMALL
56 static void rasops4_putchar8(void *, int, int col, u_int, long);
57 static void rasops4_putchar12(void *, int, int col, u_int, long);
58 static void rasops4_putchar16(void *, int, int col, u_int, long);
59 static void rasops4_makestamp(struct rasops_info *, long);
60 #endif
61
62 #ifndef RASOPS_SMALL
63 /* stamp for optimized character blitting */
64 static uint16_t stamp[16];
65 static long stamp_attr;
66 static 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 */
80 void
rasops4_init(struct rasops_info * ri)81 rasops4_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 */
117 static void
rasops4_makestamp(struct rasops_info * ri,long attr)118 rasops4_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