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/*-
 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer as
 *    the first lines of this file unmodified.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: release/9.1.0/sys/dev/fb/fbreg.h 238555 2012-07-17 19:00:46Z kib $
 */

#ifndef _DEV_FB_FBREG_H_
#define _DEV_FB_FBREG_H_

#ifdef _KERNEL

#define V_MAX_ADAPTERS		8		/* XXX */

/* some macros */
#if defined(__amd64__) || defined(__i386__)

static __inline void
copyw(uint16_t *src, uint16_t *dst, size_t size)
{
	size >>= 1;
	while (size--)
		*dst++ = *src++;
}
#define bcopy_io(s, d, c)	copyw((void*)(s), (void*)(d), (c))
#define bcopy_toio(s, d, c)	copyw((void*)(s), (void*)(d), (c))
#define bcopy_fromio(s, d, c)	copyw((void*)(s), (void*)(d), (c))
#define bzero_io(d, c)		bzero((void *)(d), (c))
#define fill_io(p, d, c)	fill((p), (void *)(d), (c))
#define fillw_io(p, d, c)	fillw((p), (void *)(d), (c))
#elif defined(__ia64__) || defined(__sparc64__)
#if defined(__ia64__)
#include <machine/bus.h>
#define	bcopy_fromio(s, d, c)	\
	bus_space_read_region_1(IA64_BUS_SPACE_MEM, s, 0, (void*)(d), c)
#define	bcopy_io(s, d, c)	\
	bus_space_copy_region_1(IA64_BUS_SPACE_MEM, s, 0, d, 0, c)
#define	bcopy_toio(s, d, c)	\
	bus_space_write_region_1(IA64_BUS_SPACE_MEM, d, 0, (void*)(s), c)
#define	bzero_io(d, c)		\
	bus_space_set_region_1(IA64_BUS_SPACE_MEM, (intptr_t)(d), 0, 0, c)
#define	fill_io(p, d, c)	\
	bus_space_set_region_1(IA64_BUS_SPACE_MEM, (intptr_t)(d), 0, p, c)
#define	fillw_io(p, d, c)	\
	bus_space_set_region_2(IA64_BUS_SPACE_MEM, (intptr_t)(d), 0, p, c)
#define	readb(a)		bus_space_read_1(IA64_BUS_SPACE_MEM, a, 0)
#define	readw(a)		bus_space_read_2(IA64_BUS_SPACE_MEM, a, 0)
#define	writeb(a, v)		bus_space_write_1(IA64_BUS_SPACE_MEM, a, 0, v)
#define	writew(a, v)		bus_space_write_2(IA64_BUS_SPACE_MEM, a, 0, v)
#define	writel(a, v)		bus_space_write_4(IA64_BUS_SPACE_MEM, a, 0, v)
#endif /* __ia64__ */
static __inline void
fillw(int val, uint16_t *buf, size_t size)
{
	while (size--)
		*buf++ = val;
}
#elif defined(__powerpc__)

#define bcopy_io(s, d, c)	ofwfb_bcopy((void *)(s), (void *)(d), (c))
#define bcopy_toio(s, d, c)	ofwfb_bcopy((void *)(s), (void *)(d), (c))
#define bcopy_fromio(s, d, c)	ofwfb_bcopy((void *)(s), (void *)(d), (c))
#define bzero_io(d, c)		ofwfb_bzero((void *)(d), (c))
#define fillw(p, d, c)		ofwfb_fillw((p), (void *)(d), (c))
#define fillw_io(p, d, c)	ofwfb_fillw((p), (void *)(d), (c))
#define	readw(a)		ofwfb_readw((u_int16_t *)(a))
#define	writew(a, v)		ofwfb_writew((u_int16_t *)(a), (v))
void ofwfb_bcopy(const void *s, void *d, size_t c);
void ofwfb_bzero(void *d, size_t c);
void ofwfb_fillw(int pat, void *base, size_t cnt);
u_int16_t ofwfb_readw(u_int16_t *addr);
void ofwfb_writew(u_int16_t *addr, u_int16_t val);

#else /* !__i386__ && !__amd64__ && !__ia64__ && !__sparc64__ && !__powerpc__ */
#define bcopy_io(s, d, c)	memcpy_io((d), (s), (c))
#define bcopy_toio(s, d, c)	memcpy_toio((d), (void *)(s), (c))
#define bcopy_fromio(s, d, c)	memcpy_fromio((void *)(d), (s), (c))
#define bzero_io(d, c)		memset_io((d), 0, (c))
#define fill_io(p, d, c)	memset_io((d), (p), (c))
#define fillw(p, d, c)		memsetw((d), (p), (c))
#define fillw_io(p, d, c)	memsetw_io((d), (p), (c))
#endif /* !__i386__ */

/* video function table */
typedef int vi_probe_t(int unit, video_adapter_t **adpp, void *arg, int flags);
typedef int vi_init_t(int unit, video_adapter_t *adp, int flags);
typedef int vi_get_info_t(video_adapter_t *adp, int mode, video_info_t *info);
typedef int vi_query_mode_t(video_adapter_t *adp, video_info_t *info);
typedef int vi_set_mode_t(video_adapter_t *adp, int mode);
typedef int vi_save_font_t(video_adapter_t *adp, int page, int size, int width,
			   u_char *data, int c, int count);
typedef int vi_load_font_t(video_adapter_t *adp, int page, int size, int width,
			   u_char *data, int c, int count);
typedef int vi_show_font_t(video_adapter_t *adp, int page);
typedef int vi_save_palette_t(video_adapter_t *adp, u_char *palette);
typedef int vi_load_palette_t(video_adapter_t *adp, u_char *palette);
typedef int vi_set_border_t(video_adapter_t *adp, int border);
typedef int vi_save_state_t(video_adapter_t *adp, void *p, size_t size);
typedef int vi_load_state_t(video_adapter_t *adp, void *p);
typedef int vi_set_win_org_t(video_adapter_t *adp, off_t offset);
typedef int vi_read_hw_cursor_t(video_adapter_t *adp, int *col, int *row);
typedef int vi_set_hw_cursor_t(video_adapter_t *adp, int col, int row);
typedef int vi_set_hw_cursor_shape_t(video_adapter_t *adp, int base,
				     int height, int celsize, int blink);
typedef int vi_blank_display_t(video_adapter_t *adp, int mode);
/* defined in sys/fbio.h
#define V_DISPLAY_ON		0
#define V_DISPLAY_BLANK		1
#define V_DISPLAY_STAND_BY	2
#define V_DISPLAY_SUSPEND	3
*/
typedef int vi_mmap_t(video_adapter_t *adp, vm_ooffset_t offset,
		      vm_paddr_t *paddr, int prot, vm_memattr_t *memattr);
typedef int vi_ioctl_t(video_adapter_t *adp, u_long cmd, caddr_t data);
typedef int vi_clear_t(video_adapter_t *adp);
typedef int vi_fill_rect_t(video_adapter_t *adp, int val, int x, int y,
			   int cx, int cy);
typedef int vi_bitblt_t(video_adapter_t *adp, ...);
typedef int vi_diag_t(video_adapter_t *adp, int level);
typedef int vi_save_cursor_palette_t(video_adapter_t *adp, u_char *palette);
typedef int vi_load_cursor_palette_t(video_adapter_t *adp, u_char *palette);
typedef int vi_copy_t(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst,
		      int n);
typedef int vi_putp_t(video_adapter_t *adp, vm_offset_t off, u_int32_t p,
		       u_int32_t a, int size, int bpp, int bit_ltor,
		       int byte_ltor);
typedef int vi_putc_t(video_adapter_t *adp, vm_offset_t off, u_int8_t c,
		      u_int8_t a);
typedef int vi_puts_t(video_adapter_t *adp, vm_offset_t off, u_int16_t *s,
		       int len);
typedef int vi_putm_t(video_adapter_t *adp, int x, int y, u_int8_t *pixel_image,
		      u_int32_t pixel_mask, int size, int width);

typedef struct video_switch {
    vi_probe_t		*probe;
    vi_init_t		*init;
    vi_get_info_t	*get_info;
    vi_query_mode_t	*query_mode;
    vi_set_mode_t	*set_mode;
    vi_save_font_t	*save_font;
    vi_load_font_t	*load_font;
    vi_show_font_t	*show_font;
    vi_save_palette_t	*save_palette;
    vi_load_palette_t	*load_palette;
    vi_set_border_t	*set_border;
    vi_save_state_t	*save_state;
    vi_load_state_t	*load_state;
    vi_set_win_org_t	*set_win_org;
    vi_read_hw_cursor_t	*read_hw_cursor;
    vi_set_hw_cursor_t	*set_hw_cursor;
    vi_set_hw_cursor_shape_t *set_hw_cursor_shape;
    vi_blank_display_t	*blank_display;
    vi_mmap_t		*mmap;
    vi_ioctl_t		*ioctl;
    vi_clear_t		*clear;
    vi_fill_rect_t	*fill_rect;
    vi_bitblt_t		*bitblt;
    int			(*reserved1)(void);
    int			(*reserved2)(void);
    vi_diag_t		*diag;
    vi_save_cursor_palette_t	*save_cursor_palette;
    vi_load_cursor_palette_t	*load_cursor_palette;
    vi_copy_t		*copy;
    vi_putp_t		*putp;
    vi_putc_t		*putc;
    vi_puts_t		*puts;
    vi_putm_t		*putm;
} video_switch_t;

#define vidd_probe(unit, adpp, arg, flags)				\
	(*vidsw[(adp)->va_index]->probe)((unit), (adpp), (arg), (flags))
#define vidd_init(unit, adp, flags)					\
	(*vidsw[(adp)->va_index]->init)((unit), (adp), (flags))
#define vidd_get_info(adp, mode, info)					\
	(*vidsw[(adp)->va_index]->get_info)((adp), (mode), (info))
#define vidd_query_mode(adp, mode)					\
	(*vidsw[(adp)->va_index]->query_mode)((adp), (mode))
#define vidd_set_mode(adp, mode)					\
	(*vidsw[(adp)->va_index]->set_mode)((adp), (mode))
#define vidd_save_font(adp, page, size, width, data, c, count)		\
	(*vidsw[(adp)->va_index]->save_font)((adp), (page), (size),	\
	    (width), (data), (c), (count))
#define vidd_load_font(adp, page, size, width, data, c, count)		\
	(*vidsw[(adp)->va_index]->load_font)((adp), (page), (size),	\
	    (width), (data), (c), (count))
#define vidd_show_font(adp, page)					\
	(*vidsw[(adp)->va_index]->show_font)((adp), (page))
#define vidd_save_palette(adp, pallete)					\
	(*vidsw[(adp)->va_index]->save_palette)((adp), (pallete))
#define vidd_load_palette(adp, pallete)					\
	(*vidsw[(adp)->va_index]->load_palette)((adp), (pallete))
#define vidd_set_border(adp, border)					\
	(*vidsw[(adp)->va_index]->set_border)((adp), (border))
#define vidd_save_state(adp, p, size)					\
	(*vidsw[(adp)->va_index]->save_state)((adp), (p), (size))
#define vidd_load_state(adp, p)						\
	(*vidsw[(adp)->va_index]->load_state)((adp), (p))
#define vidd_set_win_org(adp, offset)					\
	(*vidsw[(adp)->va_index]->set_win_org)((adp), (offset))
#define vidd_read_hw_cursor(adp, col, row)				\
	(*vidsw[(adp)->va_index]->read_hw_cursor)((adp), (col), (row))
#define vidd_set_hw_cursor(adp, col, row)				\
	(*vidsw[(adp)->va_index]->set_hw_cursor)((adp), (col), (row))
#define vidd_set_hw_cursor_shape(adp, base, height, celsize, blink)	\
	(*vidsw[(adp)->va_index]->set_hw_cursor_shape)((adp), (base),	\
	    (height), (celsize), (blink))
#define vidd_blank_display(adp, mode)					\
	(*vidsw[(adp)->va_index]->blank_display)((adp), (mode))
#define vidd_mmap(adp, offset, paddr, prot, memattr)			\
	(*vidsw[(adp)->va_index]->mmap)((adp), (offset), (paddr),	\
	    (prot), (memattr))
#define vidd_ioctl(adp, cmd, data)					\
	(*vidsw[(adp)->va_index]->ioctl)((adp), (cmd), (data))
#define vidd_clear(adp)							\
	(*vidsw[(adp)->va_index]->clear)((adp))
#define vidd_fill_rect(adp, val, x, y, cx, cy)				\
	(*vidsw[(adp)->va_index]->fill_rect)((adp), (val), (x), (y),	\
	    (cx), (cy))
#define vidd_bitblt(adp, ...)						\
	(*vidsw[(adp)->va_index]->bitblt)(adp, __VA_ARGS__)
#define vidd_diag(adp, level)						\
	(*vidsw[(adp)->va_index]->diag)((adp), (level))
#define vidd_save_cursor_palette(adp, palette)				\
	(*vidsw[(adp)->va_index]->save_cursor_palette)((adp), (palette))
#define vidd_load_cursor_palette(adp, palette)				\
	(*vidsw[(adp)->va_index]->load_cursor_palette)((adp), (palette))
#define vidd_copy(adp, src, dst, n)					\
	(*vidsw[(adp)->va_index]->copy)((adp), (src), (dst), (n))
#define vidd_putp(adp, offset, p, a, size, bpp, bit_ltor1, byte_ltor2)	\
	(*vidsw[(adp)->va_index]->putp)((adp), (offset), (p), (a), 	\
	    (size), (bpp), (bit_ltor1), (bit_ltor2))
#define vidd_putc(adp, offset, c, a)					\
	(*vidsw[(adp)->va_index]->putc)((adp), (offset), (c), (a))
#define vidd_puts(adp, offset, s, len)					\
	(*vidsw[(adp)->va_index]->puts)((adp), (offset), (s), (len))
#define vidd_putm(adp, x, y, pixel_image, pixel_mask, size, width)	\
	(*vidsw[(adp)->va_index]->putm)((adp), (x), (y), (pixel_image),	\
	    (pixel_mask), (size), (width))

/* video driver */
typedef struct video_driver {
    char		*name;
    video_switch_t	*vidsw;
    int			(*configure)(int); /* backdoor for the console driver */
} video_driver_t;

#define VIDEO_DRIVER(name, sw, config)			\
	static struct video_driver name##_driver = {	\
		#name, &sw, config			\
	};						\
	DATA_SET(videodriver_set, name##_driver);

/* global variables */
extern struct video_switch **vidsw;

/* functions for the video card driver */
int		vid_register(video_adapter_t *adp);
int		vid_unregister(video_adapter_t *adp);
video_switch_t	*vid_get_switch(char *name);
void		vid_init_struct(video_adapter_t *adp, char *name, int type,
				int unit);

/* functions for the video card client */
int		vid_allocate(char *driver, int unit, void *id);
int		vid_release(video_adapter_t *adp, void *id);
int		vid_find_adapter(char *driver, int unit);
video_adapter_t	*vid_get_adapter(int index);

/* a backdoor for the console driver to tickle the video driver XXX */
int		vid_configure(int flags);
#define VIO_PROBE_ONLY	(1 << 0)	/* probe only, don't initialize */

#ifdef FB_INSTALL_CDEV

/* virtual frame buffer driver functions */
int		fb_attach(int unit, video_adapter_t *adp,
			  struct cdevsw *cdevsw);
int		fb_detach(int unit, video_adapter_t *adp,
			  struct cdevsw *cdevsw);

/* generic frame buffer cdev driver functions */

typedef struct genfb_softc {
	int		gfb_flags;	/* flag/status bits */
#define FB_OPEN		(1 << 0)
} genfb_softc_t;

int		genfbopen(genfb_softc_t *sc, video_adapter_t *adp,
			  int flag, int mode, struct thread *td);
int		genfbclose(genfb_softc_t *sc, video_adapter_t *adp,
			   int flag, int mode, struct thread *td);
int		genfbread(genfb_softc_t *sc, video_adapter_t *adp,
			  struct uio *uio, int flag);
int		genfbwrite(genfb_softc_t *sc, video_adapter_t *adp,
			   struct uio *uio, int flag);
int		genfbioctl(genfb_softc_t *sc, video_adapter_t *adp,
			   u_long cmd, caddr_t arg, int flag, struct thread *td);
int		genfbmmap(genfb_softc_t *sc, video_adapter_t *adp,
			  vm_ooffset_t offset, vm_offset_t *paddr,
			  int prot, vm_memattr_t *memattr);

#endif /* FB_INSTALL_CDEV */

/* generic low-level driver functions */

void		fb_dump_adp_info(char *driver, video_adapter_t *adp, int level);
void		fb_dump_mode_info(char *driver, video_adapter_t *adp,
				  video_info_t *info, int level);
int		fb_type(int adp_type);
int		fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg);

#endif /* _KERNEL */

#endif /* !_DEV_FB_FBREG_H_ */

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