vgavar.h revision 1.11
1 /* $NetBSD: vgavar.h,v 1.11 2002/06/25 21:07:42 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 struct vga_handle { 33 struct pcdisplay_handle vh_ph; 34 bus_space_handle_t vh_ioh_vga, vh_allmemh; 35 int vh_mono; 36 }; 37 #define vh_iot vh_ph.ph_iot 38 #define vh_memt vh_ph.ph_memt 39 #define vh_ioh_6845 vh_ph.ph_ioh_6845 40 #define vh_memh vh_ph.ph_memh 41 42 struct vga_funcs { 43 int (*vf_ioctl)(void *, u_long, caddr_t, int, struct proc *); 44 paddr_t (*vf_mmap)(void *, off_t, int); 45 }; 46 47 struct vga_config { 48 struct vga_handle hdl; 49 struct vga_softc *softc; 50 51 int nscreens; 52 LIST_HEAD(, vgascreen) screens; 53 struct vgascreen *active; /* current display */ 54 const struct wsscreen_descr *currenttype; 55 int currentfontset1, currentfontset2; 56 57 int vc_biosmapped; 58 bus_space_tag_t vc_biostag; 59 bus_space_handle_t vc_bioshdl; 60 61 int vc_nfontslots; 62 struct egavga_font *vc_fonts[8]; /* currently loaded */ 63 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 64 65 struct vgascreen *wantedscreen; 66 void (*switchcb)(void *, int, int); 67 void *switchcbarg; 68 69 int vc_type; 70 const struct vga_funcs *vc_funcs; 71 72 struct callout vc_switch_callout; 73 }; 74 75 struct vga_softc { 76 struct device sc_dev; 77 struct vga_config *sc_vc; 78 }; 79 80 static inline u_int8_t _vga_attr_read(struct vga_handle *, int); 81 static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 82 static inline u_int8_t _vga_ts_read(struct vga_handle *, int); 83 static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 84 static inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 85 static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 86 static inline u_int8_t _vga_crtc_read(struct vga_handle *, int); 87 static inline void _vga_crtc_write(struct vga_handle *, int, u_int8_t); 88 89 static inline u_int8_t 90 _vga_attr_read(struct vga_handle *vh, int reg) 91 { 92 u_int8_t res; 93 94 /* reset state */ 95 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 96 97 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 98 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR); 99 100 /* reset state XXX unneeded? */ 101 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 102 103 /* enable */ 104 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 105 106 return (res); 107 } 108 109 static inline void 110 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 111 { 112 /* reset state */ 113 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 114 115 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 116 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val); 117 118 /* reset state XXX unneeded? */ 119 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 120 121 /* enable */ 122 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 123 } 124 125 static inline u_int8_t 126 _vga_ts_read(struct vga_handle *vh, int reg) 127 { 128 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 129 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA)); 130 } 131 132 static inline void 133 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 134 { 135 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 136 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val); 137 } 138 139 static inline u_int8_t 140 _vga_gdc_read(struct vga_handle *vh, int reg) 141 { 142 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 143 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA)); 144 } 145 146 static inline void 147 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 148 { 149 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 150 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val); 151 } 152 153 static inline u_int8_t 154 _vga_crtc_read(struct vga_handle *vh, int reg) 155 { 156 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 157 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA)); 158 } 159 160 static inline void 161 _vga_crtc_write(struct vga_handle *vh, int reg, u_int8_t val) 162 { 163 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg); 164 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA, val); 165 } 166 167 #define vga_attr_read(vh, reg) \ 168 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 169 #define vga_attr_write(vh, reg, val) \ 170 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 171 #define vga_ts_read(vh, reg) \ 172 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 173 #define vga_ts_write(vh, reg, val) \ 174 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 175 #define vga_gdc_read(vh, reg) \ 176 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 177 #define vga_gdc_write(vh, reg, val) \ 178 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 179 180 #define vga_6845_read(vh, reg) \ 181 pcdisplay_6845_read(&(vh)->vh_ph, reg) 182 #define vga_6845_write(vh, reg, val) \ 183 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 184 185 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 186 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 187 bus_space_tag_t, int, int, 188 const struct vga_funcs *); 189 #define VGA_QUIRK_ONEFONT 0x01 190 #define VGA_QUIRK_NOFASTSCROLL 0x02 191 int vga_is_console(bus_space_tag_t, int); 192 193 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 194 195 struct wsscreen_descr; 196 void vga_loadchars(struct vga_handle *, int, int, int, int, char *); 197 void vga_setfontset(struct vga_handle *, int, int); 198 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 199
Indexes created Mon Sep 29 21:09:56 GMT 2025