vgavar.h revision 1.31
1 /* $NetBSD: vgavar.h,v 1.31 2014/08/21 13:52:22 macallan 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, void *, int, struct lwp *); 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 #if 0 59 int vc_biosmapped; 60 bus_space_tag_t vc_biostag; 61 bus_space_handle_t vc_bioshdl; 62 #endif 63 struct vgascreen *wantedscreen; 64 void (*switchcb)(void *, int, int); 65 void *switchcbarg; 66 67 struct callout vc_switch_callout; 68 int vc_quirks; 69 int vc_type; 70 const struct vga_funcs *vc_funcs; 71 72 u_int8_t palette[256 * 3]; 73 #ifndef VGA_RASTERCONSOLE 74 int currentfontset1, currentfontset2; 75 int vc_nfontslots; 76 struct egavga_font *vc_fonts[8]; /* currently loaded */ 77 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 78 #else 79 int nfonts; 80 LIST_HEAD(, vga_raster_font) vc_fontlist; 81 #endif /* !VGA_RASTERCONSOLE */ 82 }; 83 84 struct vga_softc { 85 device_t sc_dev; 86 struct vga_config *sc_vc; 87 }; 88 89 static __inline u_int8_t _vga_attr_read(struct vga_handle *, int); 90 static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 91 static __inline u_int8_t _vga_ts_read(struct vga_handle *, int); 92 static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 93 static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 94 static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 95 96 #define vga_raw_read(vh, reg) \ 97 bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg) 98 #define vga_raw_write(vh, reg, value) \ 99 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value) 100 101 #define vga_enable(vh) \ 102 vga_raw_write(vh, 0, 0x20) 103 104 #define vga_reset_state(vh) \ 105 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10) 106 107 static __inline u_int8_t 108 _vga_attr_read(struct vga_handle *vh, int reg) 109 { 110 u_int8_t res; 111 112 /* reset state */ 113 vga_reset_state(vh); 114 115 vga_raw_write(vh, VGA_ATC_INDEX, reg); 116 res = vga_raw_read(vh, VGA_ATC_DATAR); 117 118 /* XXX unneeded? */ 119 vga_reset_state(vh); 120 121 vga_enable(vh); 122 123 return res; 124 } 125 126 static __inline void 127 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 128 { 129 130 vga_reset_state(vh); 131 132 vga_raw_write(vh, VGA_ATC_INDEX, reg); 133 vga_raw_write(vh, VGA_ATC_DATAW, val); 134 135 /* XXX unneeded? */ 136 vga_reset_state(vh); 137 138 vga_enable(vh); 139 } 140 141 static __inline u_int8_t 142 _vga_ts_read(struct vga_handle *vh, int reg) 143 { 144 145 vga_raw_write(vh, VGA_TS_INDEX, reg); 146 return vga_raw_read(vh, VGA_TS_DATA); 147 } 148 149 static __inline void 150 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 151 { 152 153 vga_raw_write(vh, VGA_TS_INDEX, reg); 154 vga_raw_write(vh, VGA_TS_DATA, val); 155 } 156 157 static __inline u_int8_t 158 _vga_gdc_read(struct vga_handle *vh, int reg) 159 { 160 161 vga_raw_write(vh, VGA_GDC_INDEX, reg); 162 return vga_raw_read(vh, VGA_GDC_DATA); 163 } 164 165 static __inline void 166 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 167 { 168 169 vga_raw_write(vh, VGA_GDC_INDEX, reg); 170 vga_raw_write(vh, VGA_GDC_DATA, val); 171 } 172 173 #define vga_attr_read(vh, reg) \ 174 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 175 #define vga_attr_write(vh, reg, val) \ 176 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 177 #define vga_ts_read(vh, reg) \ 178 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 179 #define vga_ts_write(vh, reg, val) \ 180 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 181 #define vga_gdc_read(vh, reg) \ 182 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 183 #define vga_gdc_write(vh, reg, val) \ 184 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 185 186 #define vga_6845_read(vh, reg) \ 187 pcdisplay_6845_read(&(vh)->vh_ph, reg) 188 #define vga_6845_write(vh, reg, val) \ 189 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 190 #define _vga_6845_read(vh, reg) \ 191 _pcdisplay_6845_read(&(vh)->vh_ph, reg) 192 #define _vga_6845_write(vh, reg, val) \ 193 _pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 194 195 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 196 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 197 bus_space_tag_t, int, int, const struct vga_funcs *); 198 #define VGA_QUIRK_ONEFONT 0x01 199 #define VGA_QUIRK_NOFASTSCROLL 0x02 200 int vga_is_console(bus_space_tag_t, int); 201 202 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 203 int vga_cndetach(void); 204 205 void vga_resume(struct vga_softc *); 206 207 #ifndef VGA_RASTERCONSOLE 208 struct wsscreen_descr; 209 void vga_loadchars(struct vga_handle *, int, int, int, int, const char *); 210 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 211 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 212 void vga_copyfont01(struct vga_handle *); 213 #endif 214 void vga_setfontset(struct vga_handle *, int, int); 215 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 216 #else /* !VGA_RASTERCONSOLE */ 217 void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int); 218 #endif /* !VGA_RASTERCONSOLE */ 219 void vga_reset(struct vga_handle *, void (*)(struct vga_handle *)); 220 void vga_initregs(struct vga_handle *); 221 222 extern int vga_no_builtinfont; 223
Indexes created Tue Sep 30 11:09:46 GMT 2025