sys/dev/ic/vgavar.h

   1 /* $NetBSD: vgavar.h,v 1.27 2007/12/09 20:28:00 jmcneill 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@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, void *, int, struct lwp *);
  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
  58         int vc_biosmapped;
  59         bus_space_tag_t vc_biostag;
  60         bus_space_handle_t vc_bioshdl;
  61
  62         struct vgascreen *wantedscreen;
  63         void (*switchcb)(void *, int, int);
  64         void *switchcbarg;
  65
  66         struct callout vc_switch_callout;
  67         int vc_quirks;
  68         int vc_type;
  69         const struct vga_funcs *vc_funcs;
  70
  71 #ifndef VGA_RASTERCONSOLE
  72         int currentfontset1, currentfontset2;
  73         int vc_nfontslots;
  74         struct egavga_font *vc_fonts[8]; /* currently loaded */
  75         TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */
  76 #else
  77         int nfonts;
  78         LIST_HEAD(, vga_raster_font) vc_fontlist;
  79 #endif /* !VGA_RASTERCONSOLE */
  80 };
  81
  82 struct vga_softc {
  83         device_t sc_dev;
  84         struct vga_config *sc_vc;
  85 };
  86
  87 static __inline u_int8_t        _vga_attr_read(struct vga_handle *, int);
  88 static __inline void    _vga_attr_write(struct vga_handle *, int, u_int8_t);
  89 static __inline u_int8_t        _vga_ts_read(struct vga_handle *, int);
  90 static __inline void    _vga_ts_write(struct vga_handle *, int, u_int8_t);
  91 static __inline u_int8_t        _vga_gdc_read(struct vga_handle *, int);
  92 static __inline void    _vga_gdc_write(struct vga_handle *, int, u_int8_t);
  93
  94 static __inline u_int8_t
  95 _vga_attr_read(struct vga_handle *vh, int reg)
  96 {
  97         u_int8_t res;
  98
  99         /* reset state */
 100         (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
 101
 102         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
 103         res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR);
 104
 105         /* reset state XXX unneeded? */
 106         (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
 107
 108         /* enable */
 109         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
 110
 111         return (res);
 112 }
 113
 114 static __inline void
 115 _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
 116 {
 117
 118         /* reset state */
 119         (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
 120
 121         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
 122         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val);
 123
 124         /* reset state XXX unneeded? */
 125         (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
 126
 127         /* enable */
 128         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
 129 }
 130
 131 static __inline u_int8_t
 132 _vga_ts_read(struct vga_handle *vh, int reg)
 133 {
 134
 135         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
 136         return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA));
 137 }
 138
 139 static __inline void
 140 _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val)
 141 {
 142
 143         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
 144         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val);
 145 }
 146
 147 static __inline u_int8_t
 148 _vga_gdc_read(struct vga_handle *vh, int reg)
 149 {
 150
 151         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
 152         return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA));
 153 }
 154
 155 static __inline void
 156 _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val)
 157 {
 158
 159         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
 160         bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val);
 161 }
 162
 163 #define vga_attr_read(vh, reg) \
 164         _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
 165 #define vga_attr_write(vh, reg, val) \
 166         _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
 167 #define vga_ts_read(vh, reg) \
 168         _vga_ts_read(vh, offsetof(struct reg_vgats, reg))
 169 #define vga_ts_write(vh, reg, val) \
 170         _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
 171 #define vga_gdc_read(vh, reg) \
 172         _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
 173 #define vga_gdc_write(vh, reg, val) \
 174         _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
 175
 176 #define vga_6845_read(vh, reg) \
 177         pcdisplay_6845_read(&(vh)->vh_ph, reg)
 178 #define vga_6845_write(vh, reg, val) \
 179         pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
 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, const struct vga_funcs *);
 188 #define VGA_QUIRK_ONEFONT       0x01
 189 #define VGA_QUIRK_NOFASTSCROLL  0x02
 190 int     vga_is_console(bus_space_tag_t, int);
 191
 192 int     vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
 193 int     vga_cndetach(void);
 194
 195 void    vga_resume(struct vga_softc *);
 196
 197 #ifndef VGA_RASTERCONSOLE
 198 struct wsscreen_descr;
 199 void    vga_loadchars(struct vga_handle *, int, int, int, int, const char *);
 200 void    vga_readoutchars(struct vga_handle *, int, int, int, int, char *);
 201 #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
 202 void    vga_copyfont01(struct vga_handle *);
 203 #endif
 204 void    vga_setfontset(struct vga_handle *, int, int);
 205 void    vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
 206 #else /* !VGA_RASTERCONSOLE */
 207 void    vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int);
 208 #endif /* !VGA_RASTERCONSOLE */
 209 void    vga_reset(struct vga_handle *, void (*)(struct vga_handle *));
 210 void    vga_initregs(struct vga_handle *);
 211
 212 extern int vga_no_builtinfont;