FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/vgavar.h
1 /* $NetBSD: vgavar.h,v 1.22 2005/02/27 00:27:03 perry Exp $ */
2
3 /*
4 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
22 * School of Computer Science
23 * Carnegie Mellon University
24 * Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30 #include <sys/callout.h>
31
32 #include "opt_vga.h"
33
34 struct vga_handle {
35 struct pcdisplay_handle vh_ph;
36 bus_space_handle_t vh_ioh_vga, vh_allmemh;
37 int vh_mono;
38 };
39 #define vh_iot vh_ph.ph_iot
40 #define vh_memt vh_ph.ph_memt
41 #define vh_ioh_6845 vh_ph.ph_ioh_6845
42 #define vh_memh vh_ph.ph_memh
43
44 struct vga_funcs {
45 int (*vf_ioctl)(void *, u_long, caddr_t, int, struct proc *);
46 paddr_t (*vf_mmap)(void *, off_t, int);
47 };
48
49 struct vga_config {
50 struct vga_handle hdl;
51 struct vga_softc *softc;
52
53 int nscreens;
54 LIST_HEAD(, vgascreen) screens;
55 struct vgascreen *active; /* current display */
56 const struct wsscreen_descr *currenttype;
57
58 int vc_biosmapped;
59 bus_space_tag_t vc_biostag;
60 bus_space_handle_t vc_bioshdl;
61
62 struct vgascreen *wantedscreen;
63 void (*switchcb)(void *, int, int);
64 void *switchcbarg;
65
66 struct callout vc_switch_callout;
67 int vc_quirks;
68 int vc_type;
69 const struct vga_funcs *vc_funcs;
70
71 #ifndef VGA_RASTERCONSOLE
72 int currentfontset1, currentfontset2;
73 int vc_nfontslots;
74 struct egavga_font *vc_fonts[8]; /* currently loaded */
75 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */
76 #else
77 int nfonts;
78 LIST_HEAD(, vga_raster_font) vc_fontlist;
79 #endif /* !VGA_RASTERCONSOLE */
80 };
81
82 struct vga_softc {
83 struct device sc_dev;
84 struct vga_config *sc_vc;
85 };
86
87 static inline u_int8_t _vga_attr_read(struct vga_handle *, int);
88 static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);
89 static inline u_int8_t _vga_ts_read(struct vga_handle *, int);
90 static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t);
91 static inline u_int8_t _vga_gdc_read(struct vga_handle *, int);
92 static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t);
93
94 static inline u_int8_t
95 _vga_attr_read(struct vga_handle *vh, int reg)
96 {
97 u_int8_t res;
98
99 /* reset state */
100 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
101
102 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
103 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR);
104
105 /* reset state XXX unneeded? */
106 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
107
108 /* enable */
109 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
110
111 return (res);
112 }
113
114 static inline void
115 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
116 {
117
118 /* reset state */
119 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
120
121 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
122 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val);
123
124 /* reset state XXX unneeded? */
125 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
126
127 /* enable */
128 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
129 }
130
131 static inline u_int8_t
132 _vga_ts_read(struct vga_handle *vh, int reg)
133 {
134
135 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
136 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA));
137 }
138
139 static inline void
140 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val)
141 {
142
143 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
144 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val);
145 }
146
147 static inline u_int8_t
148 _vga_gdc_read(struct vga_handle *vh, int reg)
149 {
150
151 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
152 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA));
153 }
154
155 static inline void
156 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val)
157 {
158
159 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
160 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val);
161 }
162
163 #define vga_attr_read(vh, reg) \
164 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
165 #define vga_attr_write(vh, reg, val) \
166 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
167 #define vga_ts_read(vh, reg) \
168 _vga_ts_read(vh, offsetof(struct reg_vgats, reg))
169 #define vga_ts_write(vh, reg, val) \
170 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
171 #define vga_gdc_read(vh, reg) \
172 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
173 #define vga_gdc_write(vh, reg, val) \
174 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
175
176 #define vga_6845_read(vh, reg) \
177 pcdisplay_6845_read(&(vh)->vh_ph, reg)
178 #define vga_6845_write(vh, reg, val) \
179 pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
180 #define _vga_6845_read(vh, reg) \
181 _pcdisplay_6845_read(&(vh)->vh_ph, reg)
182 #define _vga_6845_write(vh, reg, val) \
183 _pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
184
185 int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
186 void vga_common_attach(struct vga_softc *, bus_space_tag_t,
187 bus_space_tag_t, int, int, const struct vga_funcs *);
188 #define VGA_QUIRK_ONEFONT 0x01
189 #define VGA_QUIRK_NOFASTSCROLL 0x02
190 int vga_is_console(bus_space_tag_t, int);
191
192 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
193
194 #ifndef VGA_RASTERCONSOLE
195 struct wsscreen_descr;
196 void vga_loadchars(struct vga_handle *, int, int, int, int, const char *);
197 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *);
198 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
199 void vga_copyfont01(struct vga_handle *);
200 #endif
201 void vga_setfontset(struct vga_handle *, int, int);
202 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
203 #else /* !VGA_RASTERCONSOLE */
204 void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int);
205 #endif /* !VGA_RASTERCONSOLE */
206 #ifdef VGA_RESET
207 void vga_reset(struct vga_handle *, void (*)(struct vga_handle *));
208 #endif
209
210 extern int vga_no_builtinfont;
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