/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1998 Michael Smith and Kazutaka YOKOTA
 * 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 AUTHORS ``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 AUTHORS 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.
 */

#ifndef _DEV_FB_VESA_H_
#define _DEV_FB_VESA_H_

struct vesa_info
{
    /* mandatory fields */
    u_int8_t            v_sig[4];       /* VESA */
    u_int16_t           v_version;      /* ver in BCD */
    u_int32_t           v_oemstr;       /* OEM string */
    u_int32_t           v_flags;        /* flags */
#define V_DAC8          (1<<0)
#define V_NONVGA        (1<<1)
#define V_SNOW          (1<<2)
    u_int32_t           v_modetable;    /* modes */
    u_int16_t           v_memsize;      /* in 64K */
    /* 2.0 */
    u_int16_t           v_revision;     /* software rev */
    u_int32_t           v_venderstr;    /* vender */
    u_int32_t           v_prodstr;      /* product name */
    u_int32_t           v_revstr;       /* product rev */
    u_int8_t            v_strach[222];
    u_int8_t            v_oemdata[256];
} __packed;

struct vesa_mode 
{
    /* mandatory fields */
    u_int16_t           v_modeattr;
#define V_MODESUPP      (1<<0)  /* VESA mode attributes */
#define V_MODEOPTINFO   (1<<1)
#define V_MODEBIOSOUT   (1<<2)
#define V_MODECOLOR     (1<<3)
#define V_MODEGRAPHICS  (1<<4)
#define V_MODENONVGA    (1<<5)
#define V_MODENONBANK   (1<<6)
#define V_MODELFB       (1<<7)
#define V_MODEVESA      (1<<16) /* Private attributes */
    u_int8_t            v_waattr;
    u_int8_t            v_wbattr;
#define V_WATTREXIST    (1<<0)
#define V_WATTRREAD     (1<<1)
#define V_WATTRWRITE    (1<<2)
    u_int16_t           v_wgran;
    u_int16_t           v_wsize;
    u_int16_t           v_waseg;
    u_int16_t           v_wbseg;
    u_int32_t           v_posfunc;
    u_int16_t           v_bpscanline;
    /* fields optional for 1.0/1.1 implementations */
    u_int16_t           v_width;
    u_int16_t           v_height;
    u_int8_t            v_cwidth;
    u_int8_t            v_cheight;
    u_int8_t            v_planes;
    u_int8_t            v_bpp;
    u_int8_t            v_banks;
    u_int8_t            v_memmodel;
#define V_MMTEXT        0
#define V_MMCGA         1
#define V_MMHGC         2
#define V_MMEGA         3
#define V_MMPACKED      4
#define V_MMSEQU256     5
#define V_MMDIRCOLOR    6
#define V_MMYUV         7
    u_int8_t            v_banksize;
    u_int8_t            v_ipages;
    u_int8_t            v_reserved0;
    /* fields for 1.2+ implementations */
    u_int8_t            v_redmasksize;
    u_int8_t            v_redfieldpos;
    u_int8_t            v_greenmasksize;
    u_int8_t            v_greenfieldpos;
    u_int8_t            v_bluemasksize;
    u_int8_t            v_bluefieldpos;
    u_int8_t            v_resmasksize;
    u_int8_t            v_resfieldpos;
    u_int8_t            v_dircolormode;
    /* 2.0 implementations */
    u_int32_t           v_lfb;
    u_int32_t           v_offscreen;
    u_int16_t           v_offscreensize;
    /* 3.0 implementations */
    u_int16_t           v_linbpscanline;
    u_int8_t            v_bankipages;
    u_int8_t            v_linipages;
    u_int8_t            v_linredmasksize;
    u_int8_t            v_linredfieldpos;
    u_int8_t            v_lingreenmasksize;
    u_int8_t            v_lingreenfieldpos;
    u_int8_t            v_linbluemasksize;
    u_int8_t            v_linbluefieldpos;
    u_int8_t            v_linresmasksize;
    u_int8_t            v_linresfieldpos;
    u_int32_t           v_maxpixelclock;
    u_int8_t            v_reserved1[190];
} __packed;

#ifdef _KERNEL

#define VESA_MODE(x)    ((x) >= M_VESA_BASE && (x) <= M_VESA_MODE_MAX)

int vesa_load_ioctl(void);
int vesa_unload_ioctl(void);

#endif

#endif /* !_DEV_FB_VESA_H_ */