Line data Source code
1 : /* $OpenBSD: vgavar.h,v 1.13 2015/07/26 03:17:07 miod Exp $ */
2 : /* $NetBSD: vgavar.h,v 1.4 2000/06/17 07:11:50 soda Exp $ */
3 :
4 : /*
5 : * Copyright (c) 1995, 1996 Carnegie-Mellon University.
6 : * All rights reserved.
7 : *
8 : * Author: Chris G. Demetriou
9 : *
10 : * Permission to use, copy, modify and distribute this software and
11 : * its documentation is hereby granted, provided that both the copyright
12 : * notice and this permission notice appear in all copies of the
13 : * software, derivative works or modified versions, and any portions
14 : * thereof, and that both notices appear in supporting documentation.
15 : *
16 : * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17 : * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18 : * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 : *
20 : * Carnegie Mellon requests users of this software to return to
21 : *
22 : * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23 : * School of Computer Science
24 : * Carnegie Mellon University
25 : * Pittsburgh PA 15213-3890
26 : *
27 : * any improvements or extensions that they make and grant Carnegie the
28 : * rights to redistribute these changes.
29 : */
30 :
31 : #include <sys/timeout.h>
32 :
33 : struct vga_handle {
34 : struct pcdisplay_handle vh_ph;
35 : bus_space_handle_t vh_ioh_vga, vh_allmemh;
36 : int vh_mono;
37 : };
38 : #define vh_iot vh_ph.ph_iot
39 : #define vh_memt vh_ph.ph_memt
40 : #define vh_ioh_6845 vh_ph.ph_ioh_6845
41 : #define vh_memh vh_ph.ph_memh
42 :
43 : struct vgascreen {
44 : struct pcdisplayscreen pcs;
45 : LIST_ENTRY(vgascreen) next;
46 :
47 : /* videostate */
48 : struct vga_config *cfg;
49 : /* font data */
50 : struct vgafont *fontset1, *fontset2;
51 :
52 : int mindispoffset, maxdispoffset;
53 : int vga_rollover;
54 : };
55 :
56 : struct vga_config {
57 : struct vga_handle hdl;
58 :
59 : struct device *vc_softc;
60 : int vc_type;
61 : int nscreens;
62 : LIST_HEAD(, vgascreen) screens;
63 : struct vgascreen *active; /* current display */
64 : const struct wsscreen_descr *currenttype;
65 : int currentfontset1, currentfontset2;
66 :
67 : #define VGA_MAXFONT 8
68 : struct vgafont *vc_fonts[VGA_MAXFONT];
69 : uint8_t vc_palette[256 * 3];
70 :
71 : struct vgascreen *wantedscreen;
72 : void (*switchcb)(void *, int, int);
73 : void *switchcbarg;
74 :
75 : paddr_t (*vc_mmap)(void *, off_t, int);
76 :
77 : struct timeout vc_switch_timeout;
78 :
79 : #ifdef __alpha__
80 : /* placeholder for a custom wsscreen_descr for odd resolutions */
81 : struct wsscreen_descr custom_scr;
82 : struct wsscreen_descr *custom_scrlist[1];
83 : struct wsscreen_list custom_list;
84 : #endif
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 : #define vga_raw_read(vh, reg) \
95 : bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg)
96 : #define vga_raw_write(vh, reg, value) \
97 : bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value)
98 :
99 : #define vga_enable(vh) \
100 : vga_raw_write(vh, 0, 0x20);
101 :
102 : static inline u_int8_t
103 0 : _vga_attr_read(struct vga_handle *vh, int reg)
104 : {
105 : u_int8_t res;
106 :
107 : /* reset state */
108 0 : (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
109 :
110 0 : vga_raw_write(vh, VGA_ATC_INDEX, reg);
111 0 : res = vga_raw_read(vh, VGA_ATC_DATAR);
112 :
113 : /* reset state XXX unneeded? */
114 0 : (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
115 :
116 0 : vga_enable(vh);
117 :
118 0 : return (res);
119 : }
120 :
121 : static inline void
122 0 : _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
123 : {
124 : /* reset state */
125 0 : (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
126 :
127 0 : vga_raw_write(vh, VGA_ATC_INDEX, reg);
128 0 : vga_raw_write(vh, VGA_ATC_DATAW, val);
129 :
130 : /* reset state XXX unneeded? */
131 0 : (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
132 :
133 0 : vga_enable(vh);
134 0 : }
135 :
136 : static inline u_int8_t
137 0 : _vga_ts_read(struct vga_handle *vh, int reg)
138 : {
139 0 : vga_raw_write(vh, VGA_TS_INDEX, reg);
140 0 : return (vga_raw_read(vh, VGA_TS_DATA));
141 : }
142 :
143 : static inline void
144 0 : _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val)
145 : {
146 0 : vga_raw_write(vh, VGA_TS_INDEX, reg);
147 0 : vga_raw_write(vh, VGA_TS_DATA, val);
148 0 : }
149 :
150 : static inline u_int8_t
151 0 : _vga_gdc_read(struct vga_handle *vh, int reg)
152 : {
153 0 : vga_raw_write(vh, VGA_GDC_INDEX, reg);
154 0 : return (vga_raw_read(vh, VGA_GDC_DATA));
155 : }
156 :
157 : static inline void
158 0 : _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val)
159 : {
160 0 : vga_raw_write(vh, VGA_GDC_INDEX, reg);
161 0 : vga_raw_write(vh, VGA_GDC_DATA, val);
162 0 : }
163 :
164 : #define vga_attr_read(vh, reg) \
165 : _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
166 : #define vga_attr_write(vh, reg, val) \
167 : _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
168 : #define vga_ts_read(vh, reg) \
169 : _vga_ts_read(vh, offsetof(struct reg_vgats, reg))
170 : #define vga_ts_write(vh, reg, val) \
171 : _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
172 : #define vga_gdc_read(vh, reg) \
173 : _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
174 : #define vga_gdc_write(vh, reg, val) \
175 : _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
176 :
177 : #define vga_6845_read(vh, reg) \
178 : pcdisplay_6845_read(&(vh)->vh_ph, reg)
179 : #define vga_6845_write(vh, reg, val) \
180 : pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
181 :
182 : int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
183 : struct vga_config *
184 : vga_common_attach(struct device *, bus_space_tag_t, bus_space_tag_t,
185 : int);
186 : struct vga_config *
187 : vga_extended_attach(struct device *, bus_space_tag_t, bus_space_tag_t,
188 : int, paddr_t (*)(void *, off_t, int));
189 : int vga_is_console(bus_space_tag_t, int);
190 : int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
191 :
192 : struct wsscreen_descr;
193 : void vga_loadchars(struct vga_handle *, int, int, int, int, char *);
194 : void vga_restore_fonts(struct vga_config *);
195 : void vga_restore_palette(struct vga_config *);
196 : void vga_save_palette(struct vga_config *);
197 : void vga_setfontset(struct vga_handle *, int, int);
198 : void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
199 : #if NVGA_PCI > 0
200 : int vga_pci_ioctl(void *, u_long, caddr_t, int, struct proc *);
201 : #endif
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