Annotation of sys/dev/ic/vgavar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vgavar.h,v 1.8 2002/07/12 20:17:03 mickey 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 vga_config {
44: struct vga_handle hdl;
45:
46: struct device *vc_softc;
47: int vc_type;
48: int nscreens;
49: LIST_HEAD(, vgascreen) screens;
50: struct vgascreen *active; /* current display */
51: const struct wsscreen_descr *currenttype;
52: int currentfontset1, currentfontset2;
53:
54: struct vgafont *vc_fonts[8];
55:
56: struct vgascreen *wantedscreen;
57: void (*switchcb)(void *, int, int);
58: void *switchcbarg;
59:
60: paddr_t (*vc_mmap)(void *, off_t, int);
61:
62: struct timeout vc_switch_timeout;
63: };
64:
65: static inline u_int8_t _vga_attr_read(struct vga_handle *, int);
66: static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);
67: static inline u_int8_t _vga_ts_read(struct vga_handle *, int);
68: static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t);
69: static inline u_int8_t _vga_gdc_read(struct vga_handle *, int);
70: static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t);
71:
72: static inline u_int8_t _vga_attr_read(vh, reg)
73: struct vga_handle *vh;
74: int reg;
75: {
76: u_int8_t res;
77:
78: /* reset state */
79: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
80:
81: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
82: res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR);
83:
84: /* reset state XXX unneeded? */
85: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
86:
87: /* enable */
88: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
89:
90: return (res);
91: }
92:
93: static inline void _vga_attr_write(vh, reg, val)
94: struct vga_handle *vh;
95: int reg;
96: u_int8_t val;
97: {
98: /* reset state */
99: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
100:
101: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
102: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val);
103:
104: /* reset state XXX unneeded? */
105: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
106:
107: /* enable */
108: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
109: }
110:
111: static inline u_int8_t _vga_ts_read(vh, reg)
112: struct vga_handle *vh;
113: int reg;
114: {
115: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
116: return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA));
117: }
118:
119: static inline void _vga_ts_write(vh, reg, val)
120: struct vga_handle *vh;
121: int reg;
122: u_int8_t val;
123: {
124: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
125: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val);
126: }
127:
128: static inline u_int8_t _vga_gdc_read(vh, reg)
129: struct vga_handle *vh;
130: int reg;
131: {
132: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
133: return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA));
134: }
135:
136: static inline void _vga_gdc_write(vh, reg, val)
137: struct vga_handle *vh;
138: int reg;
139: u_int8_t val;
140: {
141: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
142: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val);
143: }
144:
145: #define vga_attr_read(vh, reg) \
146: _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
147: #define vga_attr_write(vh, reg, val) \
148: _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
149: #define vga_ts_read(vh, reg) \
150: _vga_ts_read(vh, offsetof(struct reg_vgats, reg))
151: #define vga_ts_write(vh, reg, val) \
152: _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
153: #define vga_gdc_read(vh, reg) \
154: _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
155: #define vga_gdc_write(vh, reg, val) \
156: _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
157:
158: #define vga_6845_read(vh, reg) \
159: pcdisplay_6845_read(&(vh)->vh_ph, reg)
160: #define vga_6845_write(vh, reg, val) \
161: pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
162:
163: int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
164: void vga_common_attach(struct device *, bus_space_tag_t,
165: bus_space_tag_t, int);
166: void vga_extended_attach(struct device *, bus_space_tag_t,
167: bus_space_tag_t, int, paddr_t (*)(void *, off_t, int));
168: int vga_is_console(bus_space_tag_t, int);
169: int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
170:
171: struct wsscreen_descr;
172: void vga_loadchars(struct vga_handle *, int, int, int, int, char *);
173: void vga_setfontset(struct vga_handle *, int, int);
174: void vga_setscreentype(struct vga_handle *,
175: const struct wsscreen_descr *);
176: #if NVGA_PCI > 0
177: int vga_pci_ioctl(void *, u_long, caddr_t, int, struct proc *);
178: #endif
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