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1 /*-
2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer as
10  *    the first lines of this file unmodified.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include "opt_syscons.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/consio.h>
37
38 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
39 #include <machine/sc_machdep.h>
40 #else
41 #include <machine/pc/display.h>
42 #endif
43
44 #include <dev/syscons/syscons.h>
45 #include <dev/syscons/sctermvar.h>
46
47 /* dumb terminal emulator */
48
49 static sc_term_init_t   dumb_init;
50 static sc_term_term_t   dumb_term;
51 static sc_term_puts_t   dumb_puts;
52 static sc_term_ioctl_t  dumb_ioctl;
53 static sc_term_clear_t  dumb_clear;
54 static sc_term_input_t  dumb_input;
55 static void             dumb_nop(void);
56 static sc_term_fkeystr_t        dumb_fkeystr;
57 static sc_term_sync_t   dumb_sync;
58
59 static sc_term_sw_t sc_term_dumb = {
60         { NULL, NULL },
61         "dumb",                         /* emulator name */
62         "dumb terminal",                /* description */
63         "*",                            /* matching renderer */
64         0,                              /* softc size */
65         0,
66         dumb_init,
67         dumb_term,
68         dumb_puts,
69         dumb_ioctl,
70         (sc_term_reset_t *)dumb_nop,
71         (sc_term_default_attr_t *)dumb_nop,
72         dumb_clear,
73         (sc_term_notify_t *)dumb_nop,
74         dumb_input,
75         dumb_fkeystr,
76         dumb_sync,
77 };
78
79 SCTERM_MODULE(dumb, sc_term_dumb);
80
81 static int
82 dumb_init(scr_stat *scp, void **softc, int code)
83 {
84         switch (code) {
85         case SC_TE_COLD_INIT:
86                 ++sc_term_dumb.te_refcount;
87                 break;
88         case SC_TE_WARM_INIT:
89                 break;
90         }
91         return 0;
92 }
93
94 static int
95 dumb_term(scr_stat *scp, void **softc)
96 {
97         --sc_term_dumb.te_refcount;
98         return 0;
99 }
100
101 static void
102 dumb_puts(scr_stat *scp, u_char *buf, int len)
103 {
104         while (len > 0) {
105                 ++scp->sc->write_in_progress;
106                 sc_term_gen_print(scp, &buf, &len, SC_NORM_ATTR << 8);
107                 sc_term_gen_scroll(scp, scp->sc->scr_map[0x20],
108                                    SC_NORM_ATTR << 8);
109                 --scp->sc->write_in_progress;
110         }
111 }
112
113 static int
114 dumb_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
115            struct thread *td)
116 {
117         vid_info_t *vi;
118
119         switch (cmd) {
120         case GIO_ATTR:          /* get current attributes */
121                 *(int*)data = SC_NORM_ATTR;
122                 return 0;
123         case CONS_GETINFO:      /* get current (virtual) console info */
124                 vi = (vid_info_t *)data;
125                 if (vi->size != sizeof(struct vid_info))
126                         return EINVAL;
127                 vi->mv_norm.fore = SC_NORM_ATTR & 0x0f;
128                 vi->mv_norm.back = (SC_NORM_ATTR >> 4) & 0x0f;
129                 vi->mv_rev.fore = SC_NORM_ATTR & 0x0f;
130                 vi->mv_rev.back = (SC_NORM_ATTR >> 4) & 0x0f;
131                 /*
132                  * The other fields are filled by the upper routine. XXX
133                  */
134                 return ENOIOCTL;
135         }
136         return ENOIOCTL;
137 }
138
139 static void
140 dumb_clear(scr_stat *scp)
141 {
142         sc_move_cursor(scp, 0, 0);
143         sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
144         mark_all(scp);
145 }
146
147 static int
148 dumb_input(scr_stat *scp, int c, struct tty *tp)
149 {
150         return FALSE;
151 }
152
153 static const char *
154 dumb_fkeystr(scr_stat *scp, int c)
155 {
156         return (NULL);
157 }
158
159 static void
160 dumb_sync(scr_stat *scp)
161 {
162 }
163
164 static void
165 dumb_nop(void)
166 {
167         /* nothing */
168 }