| 1 | /* $NetBSD: vgavar.h,v 1.33 2015/01/14 17:45:27 chs 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 | #ifdef _KERNEL_OPT |
| 33 | #include "opt_vga.h" |
| 34 | #endif |
| 35 | |
| 36 | struct vga_handle { |
| 37 | struct pcdisplay_handle vh_ph; |
| 38 | bus_space_handle_t vh_ioh_vga, vh_allmemh; |
| 39 | int vh_mono; |
| 40 | }; |
| 41 | #define vh_iot vh_ph.ph_iot |
| 42 | #define vh_memt vh_ph.ph_memt |
| 43 | #define vh_ioh_6845 vh_ph.ph_ioh_6845 |
| 44 | #define vh_memh vh_ph.ph_memh |
| 45 | |
| 46 | struct vga_funcs { |
| 47 | int (*vf_ioctl)(void *, u_long, void *, int, struct lwp *); |
| 48 | paddr_t (*vf_mmap)(void *, off_t, int); |
| 49 | }; |
| 50 | |
| 51 | struct vga_config { |
| 52 | struct vga_handle hdl; |
| 53 | struct vga_softc *softc; |
| 54 | |
| 55 | int nscreens; |
| 56 | LIST_HEAD(, vgascreen) screens; |
| 57 | struct vgascreen *active; /* current display */ |
| 58 | const struct wsscreen_descr *currenttype; |
| 59 | |
| 60 | struct vgascreen *wantedscreen; |
| 61 | void (*switchcb)(void *, int, int); |
| 62 | void *switchcbarg; |
| 63 | |
| 64 | struct callout vc_switch_callout; |
| 65 | int vc_quirks; |
| 66 | int vc_type; |
| 67 | const struct vga_funcs *vc_funcs; |
| 68 | |
| 69 | u_int8_t palette[256 * 3]; |
| 70 | #ifndef VGA_RASTERCONSOLE |
| 71 | int currentfontset1, currentfontset2; |
| 72 | int vc_nfontslots; |
| 73 | struct egavga_font *vc_fonts[8]; /* currently loaded */ |
| 74 | TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */ |
| 75 | #else |
| 76 | int nfonts; |
| 77 | LIST_HEAD(, vga_raster_font) vc_fontlist; |
| 78 | #endif /* !VGA_RASTERCONSOLE */ |
| 79 | }; |
| 80 | |
| 81 | struct vga_softc { |
| 82 | device_t sc_dev; |
| 83 | struct vga_config *sc_vc; |
| 84 | }; |
| 85 | |
| 86 | static __inline u_int8_t _vga_attr_read(struct vga_handle *, int); |
| 87 | static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t); |
| 88 | static __inline u_int8_t _vga_ts_read(struct vga_handle *, int); |
| 89 | static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t); |
| 90 | static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int); |
| 91 | static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t); |
| 92 | |
| 93 | #define vga_raw_read(vh, reg) \ |
| 94 | bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg) |
| 95 | #define vga_raw_write(vh, reg, value) \ |
| 96 | bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value) |
| 97 | |
| 98 | #define vga_enable(vh) \ |
| 99 | vga_raw_write(vh, 0, 0x20) |
| 100 | |
| 101 | #define vga_reset_state(vh) \ |
| 102 | (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10) |
| 103 | |
| 104 | static __inline u_int8_t |
| 105 | _vga_attr_read(struct vga_handle *vh, int reg) |
| 106 | { |
| 107 | u_int8_t res; |
| 108 | |
| 109 | /* reset state */ |
| 110 | vga_reset_state(vh); |
| 111 | |
| 112 | vga_raw_write(vh, VGA_ATC_INDEX, reg); |
| 113 | res = vga_raw_read(vh, VGA_ATC_DATAR); |
| 114 | |
| 115 | /* XXX unneeded? */ |
| 116 | vga_reset_state(vh); |
| 117 | |
| 118 | vga_enable(vh); |
| 119 | |
| 120 | return res; |
| 121 | } |
| 122 | |
| 123 | static __inline void |
| 124 | _vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val) |
| 125 | { |
| 126 | |
| 127 | vga_reset_state(vh); |
| 128 | |
| 129 | vga_raw_write(vh, VGA_ATC_INDEX, reg); |
| 130 | vga_raw_write(vh, VGA_ATC_DATAW, val); |
| 131 | |
| 132 | /* XXX unneeded? */ |
| 133 | vga_reset_state(vh); |
| 134 | |
| 135 | vga_enable(vh); |
| 136 | } |
| 137 | |
| 138 | static __inline u_int8_t |
| 139 | _vga_ts_read(struct vga_handle *vh, int reg) |
| 140 | { |
| 141 | |
| 142 | vga_raw_write(vh, VGA_TS_INDEX, reg); |
| 143 | return vga_raw_read(vh, VGA_TS_DATA); |
| 144 | } |
| 145 | |
| 146 | static __inline void |
| 147 | _vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val) |
| 148 | { |
| 149 | |
| 150 | vga_raw_write(vh, VGA_TS_INDEX, reg); |
| 151 | vga_raw_write(vh, VGA_TS_DATA, val); |
| 152 | } |
| 153 | |
| 154 | static __inline u_int8_t |
| 155 | _vga_gdc_read(struct vga_handle *vh, int reg) |
| 156 | { |
| 157 | |
| 158 | vga_raw_write(vh, VGA_GDC_INDEX, reg); |
| 159 | return vga_raw_read(vh, VGA_GDC_DATA); |
| 160 | } |
| 161 | |
| 162 | static __inline void |
| 163 | _vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val) |
| 164 | { |
| 165 | |
| 166 | vga_raw_write(vh, VGA_GDC_INDEX, reg); |
| 167 | vga_raw_write(vh, VGA_GDC_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 | #define _vga_6845_read(vh, reg) \ |
| 188 | _pcdisplay_6845_read(&(vh)->vh_ph, reg) |
| 189 | #define _vga_6845_write(vh, reg, val) \ |
| 190 | _pcdisplay_6845_write(&(vh)->vh_ph, reg, val) |
| 191 | |
| 192 | int vga_common_probe(bus_space_tag_t, bus_space_tag_t); |
| 193 | void vga_common_attach(struct vga_softc *, bus_space_tag_t, |
| 194 | bus_space_tag_t, int, int, const struct vga_funcs *); |
| 195 | #define VGA_QUIRK_ONEFONT 0x01 |
| 196 | #define VGA_QUIRK_NOFASTSCROLL 0x02 |
| 197 | int vga_is_console(bus_space_tag_t, int); |
| 198 | |
| 199 | int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int); |
| 200 | int vga_cndetach(void); |
| 201 | |
| 202 | void vga_resume(struct vga_softc *); |
| 203 | |
| 204 | #ifndef VGA_RASTERCONSOLE |
| 205 | struct wsscreen_descr; |
| 206 | void vga_loadchars(struct vga_handle *, int, int, int, int, const char *); |
| 207 | void vga_readoutchars(struct vga_handle *, int, int, int, int, char *); |
| 208 | #ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL |
| 209 | void vga_copyfont01(struct vga_handle *); |
| 210 | #endif |
| 211 | void vga_setfontset(struct vga_handle *, int, int); |
| 212 | void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *); |
| 213 | #else /* !VGA_RASTERCONSOLE */ |
| 214 | void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int); |
| 215 | #endif /* !VGA_RASTERCONSOLE */ |
| 216 | void vga_reset(struct vga_handle *, void (*)(struct vga_handle *)); |
| 217 | void vga_initregs(struct vga_handle *); |
| 218 | |
| 219 | extern int vga_no_builtinfont; |
| 220 | |