1ce9af548e
to char-cell based vga(4) driver, and fully compatible with existing apps like XFree86. Currently it supports 80x25, 80x30, 80x40 and 80x50 text modes using emulation. You can enable it by specifying `options VGA_RASTERCONSOLE' in your kernel config file. Note that displaying multilingual text doesn't work yet. Necessary code is already there, but userland stuff and some functionality isn't ready for prime time yet. I'm working on them.
213 lines
6.6 KiB
C
213 lines
6.6 KiB
C
/* $NetBSD: vgavar.h,v 1.15 2002/10/15 18:14:42 junyoung Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/callout.h>
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#include "opt_vga.h"
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struct vga_handle {
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struct pcdisplay_handle vh_ph;
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bus_space_handle_t vh_ioh_vga, vh_allmemh;
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int vh_mono;
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};
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#define vh_iot vh_ph.ph_iot
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#define vh_memt vh_ph.ph_memt
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#define vh_ioh_6845 vh_ph.ph_ioh_6845
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#define vh_memh vh_ph.ph_memh
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struct vga_funcs {
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int (*vf_ioctl)(void *, u_long, caddr_t, int, struct proc *);
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paddr_t (*vf_mmap)(void *, off_t, int);
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};
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struct vga_config {
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struct vga_handle hdl;
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struct vga_softc *softc;
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int nscreens;
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LIST_HEAD(, vgascreen) screens;
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struct vgascreen *active; /* current display */
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const struct wsscreen_descr *currenttype;
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int vc_biosmapped;
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bus_space_tag_t vc_biostag;
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bus_space_handle_t vc_bioshdl;
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struct vgascreen *wantedscreen;
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void (*switchcb)(void *, int, int);
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void *switchcbarg;
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struct callout vc_switch_callout;
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int vc_quirks;
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int vc_type;
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const struct vga_funcs *vc_funcs;
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#ifndef VGA_RASTERCONSOLE
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int currentfontset1, currentfontset2;
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int vc_nfontslots;
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struct egavga_font *vc_fonts[8]; /* currently loaded */
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TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */
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#else
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int nfonts;
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LIST_HEAD(, vga_raster_font) vc_fontlist;
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#endif /* !VGA_RASTERCONSOLE */
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};
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struct vga_softc {
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struct device sc_dev;
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struct vga_config *sc_vc;
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};
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static inline u_int8_t _vga_attr_read(struct vga_handle *, int);
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static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);
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static inline u_int8_t _vga_ts_read(struct vga_handle *, int);
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static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t);
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static inline u_int8_t _vga_gdc_read(struct vga_handle *, int);
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static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t);
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static inline u_int8_t _vga_crtc_read(struct vga_handle *, int);
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static inline void _vga_crtc_write(struct vga_handle *, int, u_int8_t);
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static inline u_int8_t
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_vga_attr_read(struct vga_handle *vh, int reg)
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{
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u_int8_t res;
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/* reset state */
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(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
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res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR);
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/* reset state XXX unneeded? */
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(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
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/* enable */
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
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return (res);
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}
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static inline void
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_vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
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{
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/* reset state */
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(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val);
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/* reset state XXX unneeded? */
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(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
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/* enable */
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
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}
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static inline u_int8_t
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_vga_ts_read(struct vga_handle *vh, int reg)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
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return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA));
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}
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static inline void
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_vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val);
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}
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static inline u_int8_t
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_vga_gdc_read(struct vga_handle *vh, int reg)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
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return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA));
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}
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static inline void
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_vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val);
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}
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static inline u_int8_t
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_vga_crtc_read(struct vga_handle *vh, int reg)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg);
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return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA));
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}
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static inline void
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_vga_crtc_write(struct vga_handle *vh, int reg, u_int8_t val)
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{
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_INDEX, reg);
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_CRTC_DATA, val);
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}
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#define vga_attr_read(vh, reg) \
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_vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
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#define vga_attr_write(vh, reg, val) \
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_vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
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#define vga_ts_read(vh, reg) \
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_vga_ts_read(vh, offsetof(struct reg_vgats, reg))
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#define vga_ts_write(vh, reg, val) \
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_vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
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#define vga_gdc_read(vh, reg) \
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_vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
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#define vga_gdc_write(vh, reg, val) \
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_vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
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#define vga_6845_read(vh, reg) \
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pcdisplay_6845_read(&(vh)->vh_ph, reg)
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#define vga_6845_write(vh, reg, val) \
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pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
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int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
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void vga_common_attach(struct vga_softc *, bus_space_tag_t,
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bus_space_tag_t, int, int, const struct vga_funcs *);
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#define VGA_QUIRK_ONEFONT 0x01
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#define VGA_QUIRK_NOFASTSCROLL 0x02
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int vga_is_console(bus_space_tag_t, int);
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int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
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#ifndef VGA_RASTERCONSOLE
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struct wsscreen_descr;
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void vga_loadchars(struct vga_handle *, int, int, int, int, char *);
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void vga_readoutchars(struct vga_handle *, int, int, int, int, char *);
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#ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
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void vga_copyfont01(struct vga_handle *);
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#endif
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void vga_setfontset(struct vga_handle *, int, int);
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void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
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#else /* !VGA_RASTERCONSOLE */
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void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int);
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#endif /* !VGA_RASTERCONSOLE */
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