vgavar.h revision 1.17
1 /* $NetBSD: vgavar.h,v 1.17 2003/01/27 15:16:12 tsutsui 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 #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, 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
Indexes created Mon Sep 29 03:10:08 GMT 2025