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/* $OpenBSD: vgavar.h,v 1.13 2015/07/26 03:17:07 miod Exp $ */
/* $NetBSD: vgavar.h,v 1.4 2000/06/17 07:11:50 soda 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/timeout.h>
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 vgascreen {
struct pcdisplayscreen pcs;
LIST_ENTRY(vgascreen) next;
/* videostate */
struct vga_config *cfg;
/* font data */
struct vgafont *fontset1, *fontset2;
int mindispoffset, maxdispoffset;
int vga_rollover;
};
struct vga_config {
struct vga_handle hdl;
struct device *vc_softc;
int vc_type;
int nscreens;
LIST_HEAD(, vgascreen) screens;
struct vgascreen *active; /* current display */
const struct wsscreen_descr *currenttype;
int currentfontset1, currentfontset2;
#define VGA_MAXFONT 8
struct vgafont *vc_fonts[VGA_MAXFONT];
uint8_t vc_palette[256 * 3];
struct vgascreen *wantedscreen;
void (*switchcb)(void *, int, int);
void *switchcbarg;
paddr_t (*vc_mmap)(void *, off_t, int);
struct timeout vc_switch_timeout;
#ifdef __alpha__
/* placeholder for a custom wsscreen_descr for odd resolutions */
struct wsscreen_descr custom_scr;
struct wsscreen_descr *custom_scrlist[1];
struct wsscreen_list custom_list;
#endif
};
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);
static inline u_int8_t
_vga_attr_read(struct vga_handle *vh, int reg)
{
u_int8_t res;
/* reset state */
(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
vga_raw_write(vh, VGA_ATC_INDEX, reg);
res = vga_raw_read(vh, VGA_ATC_DATAR);
/* reset state XXX unneeded? */
(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
vga_enable(vh);
return (res);
}
static inline void
_vga_attr_write(struct vga_handle *vh, int reg, u_int8_t val)
{
/* reset state */
(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
vga_raw_write(vh, VGA_ATC_INDEX, reg);
vga_raw_write(vh, VGA_ATC_DATAW, val);
/* reset state XXX unneeded? */
(void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
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)
int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
struct vga_config *
vga_common_attach(struct device *, bus_space_tag_t, bus_space_tag_t,
int);
struct vga_config *
vga_extended_attach(struct device *, bus_space_tag_t, bus_space_tag_t,
int, paddr_t (*)(void *, off_t, int));
int vga_is_console(bus_space_tag_t, int);
int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
struct wsscreen_descr;
void vga_loadchars(struct vga_handle *, int, int, int, int, char *);
void vga_restore_fonts(struct vga_config *);
void vga_restore_palette(struct vga_config *);
void vga_save_palette(struct vga_config *);
void vga_setfontset(struct vga_handle *, int, int);
void vga_setscreentype(struct vga_handle *, const struct wsscreen_descr *);
#if NVGA_PCI > 0
int vga_pci_ioctl(void *, u_long, caddr_t, int, struct proc *);
#endif
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