vgavar.h revision 1.29
1 /* $NetBSD: vgavar.h,v 1.29 2010/12/09 23:33:30 christos 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 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 u_int8_t palette[256 * 3]; 72 #ifndef VGA_RASTERCONSOLE 73 int currentfontset1, currentfontset2; 74 int vc_nfontslots; 75 struct egavga_font *vc_fonts[8]; /* currently loaded */ 76 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 77 #else 78 int nfonts; 79 LIST_HEAD(, vga_raster_font) vc_fontlist; 80 #endif /* !VGA_RASTERCONSOLE */ 81 }; 82 83 struct vga_softc { 84 device_t sc_dev; 85 struct vga_config *sc_vc; 86 }; 87 88 static __inline u_int8_t _vga_attr_read(struct vga_handle *, int); 89 static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 90 static __inline u_int8_t _vga_ts_read(struct vga_handle *, int); 91 static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 92 static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 93 static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 94 95 #define vga_raw_read(vh, reg) \ 96 bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg) 97 #define vga_raw_write(vh, reg, value) \ 98 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value) 99 100 #define vga_enable(vh) \ 101 vga_raw_write(vh, 0, 0x20) 102 103 #define vga_reset_state(vh) \ 104 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10) 105 106 static __inline u_int8_t 107 _vga_attr_read(struct vga_handle *vh, int reg) 108 { 109 u_int8_t res; 110 111 /* reset state */ 112 vga_reset_state(vh); 113 114 vga_raw_write(vh, VGA_ATC_INDEX, reg); 115 res = vga_raw_read(vh, VGA_ATC_DATAR); 116 117 /* XXX unneeded? */ 118 vga_reset_state(vh); 119 120 vga_enable(vh); 121 122 return res; 123 } 124 125 static __inline void 126 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 127 { 128 129 vga_reset_state(vh); 130 131 vga_raw_write(vh, VGA_ATC_INDEX, reg); 132 vga_raw_write(vh, VGA_ATC_DATAW, val); 133 134 /* XXX unneeded? */ 135 vga_reset_state(vh); 136 137 vga_enable(vh); 138 } 139 140 static __inline u_int8_t 141 _vga_ts_read(struct vga_handle *vh, int reg) 142 { 143 144 vga_raw_write(vh, VGA_TS_INDEX, reg); 145 return vga_raw_read(vh, VGA_TS_DATA); 146 } 147 148 static __inline void 149 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 150 { 151 152 vga_raw_write(vh, VGA_TS_INDEX, reg); 153 vga_raw_write(vh, VGA_TS_DATA, val); 154 } 155 156 static __inline u_int8_t 157 _vga_gdc_read(struct vga_handle *vh, int reg) 158 { 159 160 vga_raw_write(vh, VGA_GDC_INDEX, reg); 161 return vga_raw_read(vh, VGA_GDC_DATA); 162 } 163 164 static __inline void 165 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 166 { 167 168 vga_raw_write(vh, VGA_GDC_INDEX, reg); 169 vga_raw_write(vh, VGA_GDC_DATA, val); 170 } 171 172 #define vga_attr_read(vh, reg) \ 173 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 174 #define vga_attr_write(vh, reg, val) \ 175 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 176 #define vga_ts_read(vh, reg) \ 177 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 178 #define vga_ts_write(vh, reg, val) \ 179 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 180 #define vga_gdc_read(vh, reg) \ 181 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 182 #define vga_gdc_write(vh, reg, val) \ 183 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 184 185 #define vga_6845_read(vh, reg) \ 186 pcdisplay_6845_read(&(vh)->vh_ph, reg) 187 #define vga_6845_write(vh, reg, val) \ 188 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 189 #define _vga_6845_read(vh, reg) \ 190 _pcdisplay_6845_read(&(vh)->vh_ph, reg) 191 #define _vga_6845_write(vh, reg, val) \ 192 _pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 193 194 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 195 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 196 bus_space_tag_t, int, int, const struct vga_funcs *); 197 #define VGA_QUIRK_ONEFONT 0x01 198 #define VGA_QUIRK_NOFASTSCROLL 0x02 199 int vga_is_console(bus_space_tag_t, int); 200 201 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 202 int vga_cndetach(void); 203 204 void vga_resume(struct vga_softc *); 205 206 #ifndef VGA_RASTERCONSOLE 207 struct wsscreen_descr; 208 void vga_loadchars(struct vga_handle *, int, int, int, int, const char *); 209 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 210 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 211 void vga_copyfont01(struct vga_handle *); 212 #endif 213 void vga_setfontset(struct vga_handle *, int, int); 214 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 215 #else /* !VGA_RASTERCONSOLE */ 216 void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int); 217 #endif /* !VGA_RASTERCONSOLE */ 218 void vga_reset(struct vga_handle *, void (*)(struct vga_handle *)); 219 void vga_initregs(struct vga_handle *); 220 void vga_save_palette(struct vga_config *); 221 void vga_restore_palette(struct vga_config *); 222 223 extern int vga_no_builtinfont; 224
Indexes created Sat Sep 27 22:09:54 GMT 2025