vgavar.h revision 1.10.8.1
1 /* $NetBSD: vgavar.h,v 1.10.8.1 2002/07/15 10:35:21 gehenna 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 int currentfontset1, currentfontset2; 58 59 int vc_biosmapped; 60 bus_space_tag_t vc_biostag; 61 bus_space_handle_t vc_bioshdl; 62 63 int vc_nfontslots; 64 struct egavga_font *vc_fonts[8]; /* currently loaded */ 65 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 66 67 struct vgascreen *wantedscreen; 68 void (*switchcb)(void *, int, int); 69 void *switchcbarg; 70 71 int vc_type; 72 const struct vga_funcs *vc_funcs; 73 74 struct callout vc_switch_callout; 75 int vc_quirks; 76 }; 77 78 struct vga_softc { 79 struct device sc_dev; 80 struct vga_config *sc_vc; 81 }; 82 83 static inline u_int8_t _vga_attr_read(struct vga_handle *, int); 84 static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 85 static inline u_int8_t _vga_ts_read(struct vga_handle *, int); 86 static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 87 static inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 88 static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 89 static inline u_int8_t _vga_crtc_read(struct vga_handle *, int); 90 static inline void _vga_crtc_write(struct vga_handle *, int, u_int8_t); 91 92 static inline u_int8_t 93 _vga_attr_read(struct vga_handle *vh, int reg) 94 { 95 u_int8_t res; 96 97 /* reset state */ 98 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 99 100 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 101 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR); 102 103 /* reset state XXX unneeded? */ 104 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 105 106 /* enable */ 107 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 108 109 return (res); 110 } 111 112 static inline void 113 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 114 { 115 /* reset state */ 116 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 117 118 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 119 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val); 120 121 /* reset state XXX unneeded? */ 122 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 123 124 /* enable */ 125 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 126 } 127 128 static inline u_int8_t 129 _vga_ts_read(struct vga_handle *vh, int reg) 130 { 131 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 132 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA)); 133 } 134 135 static inline void 136 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 137 { 138 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 139 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val); 140 } 141 142 static inline u_int8_t 143 _vga_gdc_read(struct vga_handle *vh, int reg) 144 { 145 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 146 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA)); 147 } 148 149 static inline void 150 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 151 { 152 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 153 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val); 154 } 155 156 static inline u_int8_t 157 _vga_crtc_read(struct vga_handle *vh, int reg) 158 { 159 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 160 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA)); 161 } 162 163 static inline void 164 _vga_crtc_write(struct vga_handle *vh, int reg, u_int8_t val) 165 { 166 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 167 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_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) 187 188 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 189 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 190 bus_space_tag_t, int, int, const struct vga_funcs *); 191 #define VGA_QUIRK_ONEFONT 0x01 192 #define VGA_QUIRK_NOFASTSCROLL 0x02 193 int vga_is_console(bus_space_tag_t, int); 194 195 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 196 197 struct wsscreen_descr; 198 void vga_loadchars(struct vga_handle *, int, int, int, int, char *); 199 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 200 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 201 void vga_copyfont01(struct vga_handle *); 202 #endif 203 void vga_setfontset(struct vga_handle *, int, int); 204 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 205
Indexes created Mon Oct 20 11:09:49 GMT 2025