vgavar.h revision 1.13
1 /* $NetBSD: vgavar.h,v 1.13 2002/06/28 22:24:11 drochner 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 }; 76 77 struct vga_softc { 78 struct device sc_dev; 79 struct vga_config *sc_vc; 80 }; 81 82 static inline u_int8_t _vga_attr_read(struct vga_handle *, int); 83 static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 84 static inline u_int8_t _vga_ts_read(struct vga_handle *, int); 85 static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 86 static inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 87 static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 88 static inline u_int8_t _vga_crtc_read(struct vga_handle *, int); 89 static inline void _vga_crtc_write(struct vga_handle *, int, u_int8_t); 90 91 static inline u_int8_t 92 _vga_attr_read(struct vga_handle *vh, int reg) 93 { 94 u_int8_t res; 95 96 /* reset state */ 97 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 98 99 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 100 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR); 101 102 /* reset state XXX unneeded? */ 103 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 104 105 /* enable */ 106 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 107 108 return (res); 109 } 110 111 static inline void 112 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 113 { 114 /* reset state */ 115 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 116 117 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 118 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val); 119 120 /* reset state XXX unneeded? */ 121 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 122 123 /* enable */ 124 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 125 } 126 127 static inline u_int8_t 128 _vga_ts_read(struct vga_handle *vh, int reg) 129 { 130 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 131 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA)); 132 } 133 134 static inline void 135 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 136 { 137 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 138 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val); 139 } 140 141 static inline u_int8_t 142 _vga_gdc_read(struct vga_handle *vh, int reg) 143 { 144 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 145 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA)); 146 } 147 148 static inline void 149 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 150 { 151 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 152 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val); 153 } 154 155 static inline u_int8_t 156 _vga_crtc_read(struct vga_handle *vh, int reg) 157 { 158 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 159 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA)); 160 } 161 162 static inline void 163 _vga_crtc_write(struct vga_handle *vh, int reg, u_int8_t val) 164 { 165 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 166 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA, val); 167 } 168 169 #define vga_attr_read(vh, reg) \ 170 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 171 #define vga_attr_write(vh, reg, val) \ 172 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 173 #define vga_ts_read(vh, reg) \ 174 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 175 #define vga_ts_write(vh, reg, val) \ 176 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 177 #define vga_gdc_read(vh, reg) \ 178 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 179 #define vga_gdc_write(vh, reg, val) \ 180 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 181 182 #define vga_6845_read(vh, reg) \ 183 pcdisplay_6845_read(&(vh)->vh_ph, reg) 184 #define vga_6845_write(vh, reg, val) \ 185 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 186 187 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 188 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 189 bus_space_tag_t, int, int, const struct vga_funcs *); 190 #define VGA_QUIRK_ONEFONT 0x01 191 #define VGA_QUIRK_NOFASTSCROLL 0x02 192 int vga_is_console(bus_space_tag_t, int); 193 194 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 195 196 struct wsscreen_descr; 197 void vga_loadchars(struct vga_handle *, int, int, int, int, char *); 198 void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); 199 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL 200 void vga_copyfont01(struct vga_handle *); 201 #endif 202 void vga_setfontset(struct vga_handle *, int, int); 203 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 204
Indexes created Mon Sep 29 21:09:56 GMT 2025