151 lines
4.8 KiB
C
151 lines
4.8 KiB
C
/* $NetBSD: vgavar.h,v 1.6 2000/08/14 20:14:51 thorpej 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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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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static inline u_int8_t _vga_attr_read __P((struct vga_handle *, int));
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static inline void _vga_attr_write __P((struct vga_handle *, int, u_int8_t));
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static inline u_int8_t _vga_ts_read __P((struct vga_handle *, int));
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static inline void _vga_ts_write __P((struct vga_handle *, int, u_int8_t));
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static inline u_int8_t _vga_gdc_read __P((struct vga_handle *, int));
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static inline void _vga_gdc_write __P((struct vga_handle *, int, u_int8_t));
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static inline u_int8_t _vga_attr_read(vh, reg)
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struct vga_handle *vh;
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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 _vga_attr_write(vh, reg, val)
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struct vga_handle *vh;
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int reg;
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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 _vga_ts_read(vh, reg)
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struct vga_handle *vh;
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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 _vga_ts_write(vh, reg, val)
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struct vga_handle *vh;
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int reg;
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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 _vga_gdc_read(vh, reg)
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struct vga_handle *vh;
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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 _vga_gdc_write(vh, reg, val)
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struct vga_handle *vh;
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int reg;
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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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#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 __P((bus_space_tag_t, bus_space_tag_t));
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void vga_common_attach __P((struct device *, bus_space_tag_t,
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bus_space_tag_t, int,
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paddr_t (*)(void *, off_t, int)));
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int vga_is_console __P((bus_space_tag_t, int));
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int vga_cnattach __P((bus_space_tag_t, bus_space_tag_t, int, int));
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struct wsscreen_descr;
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void vga_loadchars __P((struct vga_handle *, int, int, int, int, char *));
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void vga_setfontset __P((struct vga_handle *, int, int));
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void vga_setscreentype __P((struct vga_handle *,
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const struct wsscreen_descr *));
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