1 /* $NetBSD: vgavar.h,v 1.33 2015/01/14 17:45:27 chs 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 #ifdef _KERNEL_OPT 33 #include "opt_vga.h" 34 #endif 35 36 struct vga_handle { 37 struct pcdisplay_handle vh_ph; 38 bus_space_handle_t vh_ioh_vga, vh_allmemh; 39 int vh_mono; 40 }; 41 #define vh_iot vh_ph.ph_iot 42 #define vh_memt vh_ph.ph_memt 43 #define vh_ioh_6845 vh_ph.ph_ioh_6845 44 #define vh_memh vh_ph.ph_memh 45 46 struct vga_funcs { 47 int (*vf_ioctl)(void *, u_long, void *, int, struct lwp *); 48 paddr_t (*vf_mmap)(void *, off_t, int); 49 }; 50 51 struct vga_config { 52 struct vga_handle hdl; 53 struct vga_softc *softc; 54 55 int nscreens; 56 LIST_HEAD(, vgascreen) screens; 57 struct vgascreen *active; /* current display */ 58 const struct wsscreen_descr *currenttype; 59 60 struct vgascreen *wantedscreen; 61 void (*switchcb)(void *, int, int); 62 void *switchcbarg; 63 64 struct callout vc_switch_callout; 65 int vc_quirks; 66 int vc_type; 67 const struct vga_funcs *vc_funcs; 68 69 u_int8_t palette[256 * 3]; 70 #ifndef VGA_RASTERCONSOLE 71 int currentfontset1, currentfontset2; 72 int vc_nfontslots; 73 struct egavga_font *vc_fonts[8]; /* currently loaded */ 74 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 75 #else 76 int nfonts; 77 LIST_HEAD(, vga_raster_font) vc_fontlist; 78 #endif /* !VGA_RASTERCONSOLE */ 79 }; 80 81 struct vga_softc { 82 device_t sc_dev; 83 struct vga_config *sc_vc; 84 }; 85 86 static __inline u_int8_t _vga_attr_read(struct vga_handle *, int); 87 static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 88 static __inline u_int8_t _vga_ts_read(struct vga_handle *, int); 89 static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 90 static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 91 static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 92 93 #define vga_raw_read(vh, reg) \ 94 bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg) 95 #define vga_raw_write(vh, reg, value) \ 96 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value) 97 98 #define vga_enable(vh) \ 99 vga_raw_write(vh, 0, 0x20) 100 101 #define vga_reset_state(vh) \ 102 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10) 103 104 static __inline u_int8_t 105 _vga_attr_read(struct vga_handle *vh, int reg) 106 { 107 u_int8_t res; 108 109 /* reset state */ 110 vga_reset_state(vh); 111 112 vga_raw_write(vh, VGA_ATC_INDEX, reg); 113 res = vga_raw_read(vh, VGA_ATC_DATAR); 114 115 /* XXX unneeded? */ 116 vga_reset_state(vh); 117 118 vga_enable(vh); 119 120 return res; 121 } 122 123 static __inline void 124 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 125 { 126 127 vga_reset_state(vh); 128 129 vga_raw_write(vh, VGA_ATC_INDEX, reg); 130 vga_raw_write(vh, VGA_ATC_DATAW, val); 131 132 /* XXX unneeded? */ 133 vga_reset_state(vh); 134 135 vga_enable(vh); 136 } 137 138 static __inline u_int8_t 139 _vga_ts_read(struct vga_handle *vh, int reg) 140 { 141 142 vga_raw_write(vh, VGA_TS_INDEX, reg); 143 return vga_raw_read(vh, VGA_TS_DATA); 144 } 145 146 static __inline void 147 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 148 { 149 150 vga_raw_write(vh, VGA_TS_INDEX, reg); 151 vga_raw_write(vh, VGA_TS_DATA, val); 152 } 153 154 static __inline u_int8_t 155 _vga_gdc_read(struct vga_handle *vh, int reg) 156 { 157 158 vga_raw_write(vh, VGA_GDC_INDEX, reg); 159 return vga_raw_read(vh, VGA_GDC_DATA); 160 } 161 162 static __inline void 163 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 164 { 165 166 vga_raw_write(vh, VGA_GDC_INDEX, reg); 167 vga_raw_write(vh, VGA_GDC_DATA, val); 168 } 169 170 #define vga_attr_read(vh, reg) \ 171 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 172 #define vga_attr_write(vh, reg, val) \ 173 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 174 #define vga_ts_read(vh, reg) \ 175 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 176 #define vga_ts_write(vh, reg, val) \ 177 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 178 #define vga_gdc_read(vh, reg) \ 179 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 180 #define vga_gdc_write(vh, reg, val) \ 181 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 182 183 #define vga_6845_read(vh, reg) \ 184 pcdisplay_6845_read(&(vh)->vh_ph, reg) 185 #define vga_6845_write(vh, reg, val) \ 186 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 187 #define _vga_6845_read(vh, reg) \ 188 _pcdisplay_6845_read(&(vh)->vh_ph, reg) 189 #define _vga_6845_write(vh, reg, val) \ 190 _pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 191 192 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 193 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 194 bus_space_tag_t, int, int, const struct vga_funcs *); 195 #define VGA_QUIRK_ONEFONT 0x01 196 #define VGA_QUIRK_NOFASTSCROLL 0x02 197 int vga_is_console(bus_space_tag_t, int); 198 199 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 200 int vga_cndetach(void); 201 202 void vga_resume(struct vga_softc *); 203 204 #ifndef VGA_RASTERCONSOLE 205 struct wsscreen_descr; 206 void vga_loadchars(struct vga_handle *, int, int, int, int, const char *); 207 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 208 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 209 void vga_copyfont01(struct vga_handle *); 210 #endif 211 void vga_setfontset(struct vga_handle *, int, int); 212 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 213 #else /* !VGA_RASTERCONSOLE */ 214 void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int); 215 #endif /* !VGA_RASTERCONSOLE */ 216 void vga_reset(struct vga_handle *, void (*)(struct vga_handle *)); 217 void vga_initregs(struct vga_handle *); 218 219 extern int vga_no_builtinfont; 220
Indexes created Sat Sep 20 22:09:52 GMT 2025