vgavar.h revision 1.8
1 /* $NetBSD: vgavar.h,v 1.8 2001/12/13 08:35:38 junyoung 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 struct egavga_font *vc_fonts[8]; /* currently loaded */ 62 TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ 63 64 struct vgascreen *wantedscreen; 65 void (*switchcb)(void *, int, int); 66 void *switchcbarg; 67 68 int vc_type; 69 const struct vga_funcs *vc_funcs; 70 71 struct callout vc_switch_callout; 72 }; 73 74 struct vga_softc { 75 struct device sc_dev; 76 struct vga_config *sc_vc; 77 }; 78 79 static inline u_int8_t _vga_attr_read(struct vga_handle *, int); 80 static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); 81 static inline u_int8_t _vga_ts_read(struct vga_handle *, int); 82 static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); 83 static inline u_int8_t _vga_gdc_read(struct vga_handle *, int); 84 static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); 85 86 static inline u_int8_t _vga_attr_read(struct vga_handle *vh, int reg) 87 { 88 u_int8_t res; 89 90 /* reset state */ 91 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 92 93 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 94 res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR); 95 96 /* reset state XXX unneeded? */ 97 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 98 99 /* enable */ 100 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 101 102 return (res); 103 } 104 105 static inline void _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) 106 { 107 /* reset state */ 108 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 109 110 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg); 111 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val); 112 113 /* reset state XXX unneeded? */ 114 (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10); 115 116 /* enable */ 117 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20); 118 } 119 120 static inline u_int8_t _vga_ts_read(struct vga_handle *vh, int reg) 121 { 122 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 123 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA)); 124 } 125 126 static inline void _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) 127 { 128 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg); 129 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val); 130 } 131 132 static inline u_int8_t _vga_gdc_read(struct vga_handle *vh, int reg) 133 { 134 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 135 return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA)); 136 } 137 138 static inline void _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) 139 { 140 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg); 141 bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val); 142 } 143 144 #define vga_attr_read(vh, reg) \ 145 _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg)) 146 #define vga_attr_write(vh, reg, val) \ 147 _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val) 148 #define vga_ts_read(vh, reg) \ 149 _vga_ts_read(vh, offsetof(struct reg_vgats, reg)) 150 #define vga_ts_write(vh, reg, val) \ 151 _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val) 152 #define vga_gdc_read(vh, reg) \ 153 _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg)) 154 #define vga_gdc_write(vh, reg, val) \ 155 _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val) 156 157 #define vga_6845_read(vh, reg) \ 158 pcdisplay_6845_read(&(vh)->vh_ph, reg) 159 #define vga_6845_write(vh, reg, val) \ 160 pcdisplay_6845_write(&(vh)->vh_ph, reg, val) 161 162 int vga_common_probe(bus_space_tag_t, bus_space_tag_t); 163 void vga_common_attach(struct vga_softc *, bus_space_tag_t, 164 bus_space_tag_t, int, const struct vga_funcs *); 165 int vga_is_console(bus_space_tag_t, int); 166 167 int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); 168 169 struct wsscreen_descr; 170 void vga_loadchars(struct vga_handle *, int, int, int, int, char *); 171 void vga_setfontset(struct vga_handle *, int, int); 172 void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); 173
Indexes created Mon Sep 29 18:09:42 GMT 2025