vgavar.h revision 1.32
1 /* $NetBSD: vgavar.h,v 1.32 2014/11/12 03:12:35 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 #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 #if 0 61 int vc_biosmapped; 62 bus_space_tag_t vc_biostag; 63 bus_space_handle_t vc_bioshdl; 64 #endif 65 struct vgascreen *wantedscreen; 66 void (*switchcb)(void *, int, int); 67 void *switchcbarg; 68 69 struct callout vc_switch_callout; 70 int vc_quirks; 71 int vc_type; 72 const struct vga_funcs *vc_funcs; 73 74 u_int8_t palette[256 * 3]; 75 #ifndef VGA_RASTERCONSOLE 76 int currentfontset1, currentfontset2; 77 int vc_nfontslots; 78 struct egavga_font *vc_fonts[8]; /* currently loaded */ 79 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 80 #else 81 int nfonts; 82 LIST_HEAD(, vga_raster_font) vc_fontlist; 83 #endif /* !VGA_RASTERCONSOLE */ 84 }; 85 86 struct vga_softc { 87 device_t sc_dev; 88 struct vga_config *sc_vc; 89 }; 90 91 static __inline u_int8_t _vga_attr_read(struct vga_handle *, int); 92 static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 93 static __inline u_int8_t _vga_ts_read(struct vga_handle *, int); 94 static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 95 static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 96 static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 97 98 #define vga_raw_read(vh, reg) \ 99 bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg) 100 #define vga_raw_write(vh, reg, value) \ 101 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value) 102 103 #define vga_enable(vh) \ 104 vga_raw_write(vh, 0, 0x20) 105 106 #define vga_reset_state(vh) \ 107 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10) 108 109 static __inline u_int8_t 110 _vga_attr_read(struct vga_handle *vh, int reg) 111 { 112 u_int8_t res; 113 114 /* reset state */ 115 vga_reset_state(vh); 116 117 vga_raw_write(vh, VGA_ATC_INDEX, reg); 118 res = vga_raw_read(vh, VGA_ATC_DATAR); 119 120 /* XXX unneeded? */ 121 vga_reset_state(vh); 122 123 vga_enable(vh); 124 125 return res; 126 } 127 128 static __inline void 129 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 130 { 131 132 vga_reset_state(vh); 133 134 vga_raw_write(vh, VGA_ATC_INDEX, reg); 135 vga_raw_write(vh, VGA_ATC_DATAW, val); 136 137 /* XXX unneeded? */ 138 vga_reset_state(vh); 139 140 vga_enable(vh); 141 } 142 143 static __inline u_int8_t 144 _vga_ts_read(struct vga_handle *vh, int reg) 145 { 146 147 vga_raw_write(vh, VGA_TS_INDEX, reg); 148 return vga_raw_read(vh, VGA_TS_DATA); 149 } 150 151 static __inline void 152 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 153 { 154 155 vga_raw_write(vh, VGA_TS_INDEX, reg); 156 vga_raw_write(vh, VGA_TS_DATA, val); 157 } 158 159 static __inline u_int8_t 160 _vga_gdc_read(struct vga_handle *vh, int reg) 161 { 162 163 vga_raw_write(vh, VGA_GDC_INDEX, reg); 164 return vga_raw_read(vh, VGA_GDC_DATA); 165 } 166 167 static __inline void 168 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 169 { 170 171 vga_raw_write(vh, VGA_GDC_INDEX, reg); 172 vga_raw_write(vh, VGA_GDC_DATA, val); 173 } 174 175 #define vga_attr_read(vh, reg) \ 176 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 177 #define vga_attr_write(vh, reg, val) \ 178 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 179 #define vga_ts_read(vh, reg) \ 180 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 181 #define vga_ts_write(vh, reg, val) \ 182 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 183 #define vga_gdc_read(vh, reg) \ 184 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 185 #define vga_gdc_write(vh, reg, val) \ 186 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 187 188 #define vga_6845_read(vh, reg) \ 189 pcdisplay_6845_read(&(vh)->vh_ph, reg) 190 #define vga_6845_write(vh, reg, val) \ 191 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 192 #define _vga_6845_read(vh, reg) \ 193 _pcdisplay_6845_read(&(vh)->vh_ph, reg) 194 #define _vga_6845_write(vh, reg, val) \ 195 _pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 196 197 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 198 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 199 bus_space_tag_t, int, int, const struct vga_funcs *); 200 #define VGA_QUIRK_ONEFONT 0x01 201 #define VGA_QUIRK_NOFASTSCROLL 0x02 202 int vga_is_console(bus_space_tag_t, int); 203 204 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 205 int vga_cndetach(void); 206 207 void vga_resume(struct vga_softc *); 208 209 #ifndef VGA_RASTERCONSOLE 210 struct wsscreen_descr; 211 void vga_loadchars(struct vga_handle *, int, int, int, int, const char *); 212 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 213 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 214 void vga_copyfont01(struct vga_handle *); 215 #endif 216 void vga_setfontset(struct vga_handle *, int, int); 217 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 218 #else /* !VGA_RASTERCONSOLE */ 219 void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int); 220 #endif /* !VGA_RASTERCONSOLE */ 221 void vga_reset(struct vga_handle *, void (*)(struct vga_handle *)); 222 void vga_initregs(struct vga_handle *); 223 224 extern int vga_no_builtinfont; 225
Indexes created Mon Sep 29 21:09:56 GMT 2025