vgavar.h revision 1.1
1 /* $NetBSD: vgavar.h,v 1.1 1998/03/22 15:11:49 drochner 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 (at) 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 struct vga_handle { 31 bus_space_tag_t vh_iot, vh_memt; 32 bus_space_handle_t vh_ioh_vga, vh_ioh_6845, vh_allmemh, vh_memh; 33 34 int mono; /* flag */ 35 }; 36 37 static inline u_int8_t _vga_6845_read __P((struct vga_handle *, int)); 38 static inline void _vga_6845_write __P((struct vga_handle *, int, u_int8_t)); 39 static inline u_int8_t _vga_attr_read __P((struct vga_handle *, int)); 40 static inline void _vga_attr_write __P((struct vga_handle *, int, u_int8_t)); 41 static inline u_int8_t _vga_ts_read __P((struct vga_handle *, int)); 42 static inline void _vga_ts_write __P((struct vga_handle *, int, u_int8_t)); 43 static inline u_int8_t _vga_gdc_read __P((struct vga_handle *, int)); 44 static inline void _vga_gdc_write __P((struct vga_handle *, int, u_int8_t)); 45 46 static inline u_int8_t _vga_6845_read(vh, reg) 47 struct vga_handle *vh; 48 int reg; 49 { 50 bus_space_write_1(vh->vh_iot, vh->vh_ioh_6845, VGA_6845_INDEX, reg); 51 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, VGA_6845_DATA)); 52 } 53 54 static inline void _vga_6845_write(vh, reg, val) 55 struct vga_handle *vh; 56 int reg; 57 u_int8_t val; 58 { 59 bus_space_write_1(vh->vh_iot, vh->vh_ioh_6845, VGA_6845_INDEX, reg); 60 bus_space_write_1(vh->vh_iot, vh->vh_ioh_6845, VGA_6845_DATA, val); 61 } 62 63 static inline u_int8_t _vga_attr_read(vh, reg) 64 struct vga_handle *vh; 65 int reg; 66 { 67 u_int8_t res; 68 69 /* reset state */ 70 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 71 72 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 73 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR); 74 75 /* reset state XXX unneeded? */ 76 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 77 78 /* enable */ 79 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 80 81 return (res); 82 } 83 84 static inline void _vga_attr_write(vh, reg, val) 85 struct vga_handle *vh; 86 int reg; 87 u_int8_t val; 88 { 89 /* reset state */ 90 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 91 92 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 93 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val); 94 95 /* reset state XXX unneeded? */ 96 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 97 98 /* enable */ 99 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 100 } 101 102 static inline u_int8_t _vga_ts_read(vh, reg) 103 struct vga_handle *vh; 104 int reg; 105 { 106 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 107 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA)); 108 } 109 110 static inline void _vga_ts_write(vh, reg, val) 111 struct vga_handle *vh; 112 int reg; 113 u_int8_t val; 114 { 115 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 116 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val); 117 } 118 119 static inline u_int8_t _vga_gdc_read(vh, reg) 120 struct vga_handle *vh; 121 int reg; 122 { 123 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 124 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA)); 125 } 126 127 static inline void _vga_gdc_write(vh, reg, val) 128 struct vga_handle *vh; 129 int reg; 130 u_int8_t val; 131 { 132 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 133 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val); 134 } 135 136 #define vga_6845_read(vh, reg) \ 137 _vga_6845_read(vh, offsetof(struct reg_6845, reg)) 138 #define vga_6845_write(vh, reg, val) \ 139 _vga_6845_write(vh, offsetof(struct reg_6845, reg), val) 140 #define vga_attr_read(vh, reg) \ 141 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 142 #define vga_attr_write(vh, reg, val) \ 143 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 144 #define vga_ts_read(vh, reg) \ 145 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 146 #define vga_ts_write(vh, reg, val) \ 147 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 148 #define vga_gdc_read(vh, reg) \ 149 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 150 #define vga_gdc_write(vh, reg, val) \ 151 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 152 153 154 int vga_common_probe __P((bus_space_tag_t, bus_space_tag_t)); 155 void vga_common_attach __P((struct device *, bus_space_tag_t, 156 bus_space_tag_t, int)); 157 int vga_is_console __P((bus_space_tag_t, int)); 158 159 int vga_cnattach __P((bus_space_tag_t, bus_space_tag_t, int, int)); 160 161 struct wsscreen_descr; 162 void vga_loadchars __P((struct vga_handle *, int, int, int, int, char *)); 163 void vga_setfontset __P((struct vga_handle *, int)); 164 void vga_setscreentype __P((struct vga_handle *, 165 const struct wsscreen_descr *)); 166
Indexes created Sun Sep 28 12:09:53 GMT 2025