/* $NetBSD: vgavar.h,v 1.33 2015/01/14 17:45:27 chs Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/callout.h>
#ifdef _KERNEL_OPT
#include "opt_vga.h"
#endif
struct vga_handle {
struct pcdisplay_handle vh_ph;
bus_space_handle_t vh_ioh_vga, vh_allmemh;
int vh_mono;
};
#define vh_iot vh_ph.ph_iot
#define vh_memt vh_ph.ph_memt
#define vh_ioh_6845 vh_ph.ph_ioh_6845
#define vh_memh vh_ph.ph_memh
struct vga_funcs {
int (*vf_ioctl)(void *, u_long, void *, int, struct lwp *);
paddr_t (*vf_mmap)(void *, off_t, int);
};
struct vga_config {
struct vga_handle hdl;
struct vga_softc *softc;
int nscreens;
LIST_HEAD(, vgascreen) screens;
struct vgascreen *active; /* current display */
const struct wsscreen_descr *currenttype;
struct vgascreen *wantedscreen;
void (*switchcb)(void *, int, int);
void *switchcbarg;
struct callout vc_switch_callout;
int vc_quirks;
int vc_type;
const struct vga_funcs *vc_funcs;
u_int8_t palette[256 * 3];
#ifndef VGA_RASTERCONSOLE
int currentfontset1, currentfontset2;
int vc_nfontslots;
struct egavga_font *vc_fonts[8]; /* currently loaded */
TAILQ_HEAD(, egavga_font) vc_fontlist; /* LRU queue */
#else
int nfonts;
LIST_HEAD(, vga_raster_font) vc_fontlist;
#endif /* !VGA_RASTERCONSOLE */
};
struct vga_softc {
device_t sc_dev;
struct vga_config *sc_vc;
};
static __inline u_int8_t _vga_attr_read(struct vga_handle *, int);
static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);
static __inline u_int8_t _vga_ts_read(struct vga_handle *, int);
static __inline void _vga_ts_write(struct vga_handle *, int, u_int8_t);
static __inline u_int8_t _vga_gdc_read(struct vga_handle *, int);
static __inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t);
#define vga_raw_read(vh, reg) \
bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, reg)
#define vga_raw_write(vh, reg, value) \
bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, reg, value)
#define vga_enable(vh) \
vga_raw_write(vh, 0, 0x20)
#define vga_reset_state(vh) \
(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10)
static __inline u_int8_t
_vga_attr_read(struct vga_handle *vh, int reg)
{
u_int8_t res;
/* reset state */
vga_reset_state(vh);
vga_raw_write(vh, VGA_ATC_INDEX, reg);
res = vga_raw_read(vh, VGA_ATC_DATAR);
/* XXX unneeded? */
vga_reset_state(vh);
vga_enable(vh);
return res;
}
static __inline void
_vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
{
vga_reset_state(vh);
vga_raw_write(vh, VGA_ATC_INDEX, reg);
vga_raw_write(vh, VGA_ATC_DATAW, val);
/* XXX unneeded? */
vga_reset_state(vh);
vga_enable(vh);
}
static __inline u_int8_t
_vga_ts_read(struct vga_handle *vh, int reg)
{
vga_raw_write(vh, VGA_TS_INDEX, reg);
return vga_raw_read(vh, VGA_TS_DATA);
}
static __inline void
_vga_ts_write(struct vga_handle *vh, int reg, u_int8_t val)
{
vga_raw_write(vh, VGA_TS_INDEX, reg);
vga_raw_write(vh, VGA_TS_DATA, val);
}
static __inline u_int8_t
_vga_gdc_read(struct vga_handle *vh, int reg)
{
vga_raw_write(vh, VGA_GDC_INDEX, reg);
return vga_raw_read(vh, VGA_GDC_DATA);
}
static __inline void
_vga_gdc_write(struct vga_handle *vh, int reg, u_int8_t val)
{
vga_raw_write(vh, VGA_GDC_INDEX, reg);
vga_raw_write(vh, VGA_GDC_DATA, val);
}
#define vga_attr_read(vh, reg) \
_vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
#define vga_attr_write(vh, reg, val) \
_vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
#define vga_ts_read(vh, reg) \
_vga_ts_read(vh, offsetof(struct reg_vgats, reg))
#define vga_ts_write(vh, reg, val) \
_vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
#define vga_gdc_read(vh, reg) \
_vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
#define vga_gdc_write(vh, reg, val) \
_vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
#define vga_6845_read(vh, reg) \
pcdisplay_6845_read(&(vh)->vh_ph, reg)
#define vga_6845_write(vh, reg, val) \
pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
#define _vga_6845_read(vh, reg) \
_pcdisplay_6845_read(&(vh)->vh_ph, reg)
#define _vga_6845_write(vh, reg, val) \
_pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
void vga_common_attach(struct vga_softc *, bus_space_tag_t,
bus_space_tag_t, int, int, const struct vga_funcs *);
#define VGA_QUIRK_ONEFONT 0x01
#define VGA_QUIRK_NOFASTSCROLL 0x02
int vga_is_console(bus_space_tag_t, int);
int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
int vga_cndetach(void);
void vga_resume(struct vga_softc *);
#ifndef VGA_RASTERCONSOLE
struct wsscreen_descr;
void vga_loadchars(struct vga_handle *, int, int, int, int, const char *);
void vga_readoutchars(struct vga_handle *, int, int, int, int, char *);
#ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
void vga_copyfont01(struct vga_handle *);
#endif
void vga_setfontset(struct vga_handle *, int, int);
void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
#else /* !VGA_RASTERCONSOLE */
void vga_load_builtinfont(struct vga_handle *, u_int8_t *, int, int);
#endif /* !VGA_RASTERCONSOLE */
void vga_reset(struct vga_handle *, void (*)(struct vga_handle *));
void vga_initregs(struct vga_handle *);
extern int vga_no_builtinfont;