222 lines
6.2 KiB
C
222 lines
6.2 KiB
C
/* $NetBSD: vgavar.h,v 1.30 2013/01/21 19:49:15 mlelstv 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, void *, int, struct lwp *);
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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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u_int8_t palette[256 * 3];
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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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device_t 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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#define vga_raw_read(vh, reg) \
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bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg)
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#define vga_raw_write(vh, reg, value) \
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bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value)
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#define vga_enable(vh) \
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vga_raw_write(vh, 0, 0x20)
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#define vga_reset_state(vh) \
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(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10)
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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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vga_reset_state(vh);
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vga_raw_write(vh, VGA_ATC_INDEX, reg);
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res = vga_raw_read(vh, VGA_ATC_DATAR);
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/* XXX unneeded? */
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vga_reset_state(vh);
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vga_enable(vh);
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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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vga_reset_state(vh);
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vga_raw_write(vh, VGA_ATC_INDEX, reg);
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vga_raw_write(vh, VGA_ATC_DATAW, val);
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/* XXX unneeded? */
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vga_reset_state(vh);
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vga_enable(vh);
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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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vga_raw_write(vh, VGA_TS_INDEX, reg);
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return vga_raw_read(vh, 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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vga_raw_write(vh, VGA_TS_INDEX, reg);
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vga_raw_write(vh, 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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vga_raw_write(vh, VGA_GDC_INDEX, reg);
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return vga_raw_read(vh, 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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vga_raw_write(vh, VGA_GDC_INDEX, reg);
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vga_raw_write(vh, VGA_GDC_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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#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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int vga_cndetach(void);
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void vga_resume(struct vga_softc *);
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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, const 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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void vga_reset(struct vga_handle *, void (*)(struct vga_handle *));
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void vga_initregs(struct vga_handle *);
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extern int vga_no_builtinfont;
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