1 /* $NetBSD: wsfontdev.c,v 1.20 2022/05/12 23:17:42 uwe Exp $ */
2
3 /*
4 * Copyright (c) 2001
5 * Matthias Drochner. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: wsfontdev.c,v 1.20 2022/05/12 23:17:42 uwe Exp $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/conf.h>
35 #include <sys/fcntl.h>
36 #include <sys/ioctl.h>
37 #include <sys/malloc.h>
38 #include <sys/event.h>
39
40 #include <dev/wsfont/wsfont.h>
41 #include <dev/wscons/wsconsio.h> /* XXX */
42
43 #include "ioconf.h"
44
45 #ifdef WSFONT_DEBUG
46 #define DPRINTF printf
47 #else
48 #define DPRINTF while (0) printf
49 #endif
50 static int wsfont_isopen;
51
52
53 void
wsfontattach(int n)54 wsfontattach(int n)
55 {
56
57 wsfont_init();
58 }
59
60 static int
wsfontopen(dev_t dev,int flag,int mode,struct lwp * l)61 wsfontopen(dev_t dev, int flag, int mode,
62 struct lwp *l)
63 {
64
65 if (wsfont_isopen)
66 return (EBUSY);
67 wsfont_isopen = 1;
68 return (0);
69 }
70
71 static int
wsfontclose(dev_t dev,int flag,int mode,struct lwp * l)72 wsfontclose(dev_t dev, int flag, int mode,
73 struct lwp *l)
74 {
75
76 wsfont_isopen = 0;
77 return (0);
78 }
79
80 static void
fontmatchfunc(struct wsdisplay_font * f,void * cookie,int fontcookie)81 fontmatchfunc(struct wsdisplay_font *f, void *cookie, int fontcookie)
82 {
83 struct wsdisplayio_fontinfo *fi = cookie;
84 struct wsdisplayio_fontdesc fd;
85 int offset;
86
87 DPRINTF("%s %dx%d\n", f->name, f->fontwidth, f->fontheight);
88 if (fi->fi_fonts != NULL && fi->fi_buffersize > 0) {
89 memset(&fd, 0, sizeof(fd));
90 strncpy(fd.fd_name, f->name, sizeof(fd.fd_name) - 1);
91 fd.fd_width = f->fontwidth;
92 fd.fd_height = f->fontheight;
93 offset = sizeof(struct wsdisplayio_fontdesc) * (fi->fi_numentries + 1);
94 if (offset > fi->fi_buffersize) {
95 fi->fi_fonts = NULL;
96 } else
97 copyout(&fd, &fi->fi_fonts[fi->fi_numentries],
98 sizeof(struct wsdisplayio_fontdesc));
99 }
100 fi->fi_numentries++;
101 }
102
103 static int
wsdisplayio_listfonts(struct wsdisplayio_fontinfo * f)104 wsdisplayio_listfonts(struct wsdisplayio_fontinfo *f)
105 {
106 void *addr = f->fi_fonts;
107 DPRINTF("%s: %d %d\n", __func__, f->fi_buffersize, f->fi_numentries);
108 f->fi_numentries = 0;
109 wsfont_walk(fontmatchfunc, f);
110 /* check if we ran out of buffer space */
111 if (f->fi_fonts == NULL && addr != NULL) return ENOMEM;
112 return 0;
113 }
114
115 static int
wsfontioctl(dev_t dev,u_long cmd,void * data,int flag,struct lwp * l)116 wsfontioctl(dev_t dev, u_long cmd, void *data, int flag,
117 struct lwp *l)
118 {
119 char nbuf[64];
120 void *buf;
121 int res;
122
123 switch (cmd) {
124 case WSDISPLAYIO_LDFONT:
125 #define d ((struct wsdisplay_font *)data)
126 if ((flag & FWRITE) == 0)
127 return EPERM;
128
129 if (d->name) {
130 res = copyinstr(d->name, nbuf, sizeof(nbuf), 0);
131 if (res)
132 return (res);
133 d->name = nbuf;
134 } else
135 d->name = "loaded"; /* ??? */
136 buf = malloc(d->fontheight * d->stride * d->numchars,
137 M_DEVBUF, M_WAITOK);
138 res = copyin(d->data, buf,
139 d->fontheight * d->stride * d->numchars);
140 if (res) {
141 free(buf, M_DEVBUF);
142 return (res);
143 }
144 d->data = buf;
145 res = wsfont_add(d, 1);
146 free(buf, M_DEVBUF);
147 #undef d
148 return (res);
149 case WSDISPLAYIO_LISTFONTS:
150 return wsdisplayio_listfonts(data);
151 default:
152 return (EINVAL);
153 }
154 }
155
156 const struct cdevsw wsfont_cdevsw = {
157 .d_open = wsfontopen,
158 .d_close = wsfontclose,
159 .d_read = noread,
160 .d_write = nowrite,
161 .d_ioctl = wsfontioctl,
162 .d_stop = nostop,
163 .d_tty = notty,
164 .d_poll = nopoll,
165 .d_mmap = nommap,
166 .d_kqfilter = nokqfilter,
167 .d_discard = nodiscard,
168 .d_flag = D_OTHER
169 };
170