/*      $NetBSD: debug.c,v 1.11 2008/04/28 20:23:22 martin Exp $        */

/*-
 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * 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.
 * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: debug.c,v 1.11 2008/04/28 20:23:22 martin Exp $");

#include "debug_hpc.h"

#include <sys/param.h>
#include <sys/systm.h>

#include <machine/debug.h>
#include <machine/bootinfo.h>

#ifdef HPC_DEBUG_INTERRUPT_MONITOR
static struct intr_state_rgb16 {
        int cnt;
        int phase;
        /* R:G:B = [15:11][10:5][4:0] */
        uint16_t color;
} __intr_state_rgb16[] = {
        { 0, 0, RGB565_BLACK },
        { 0, 0, RGB565_RED },
        { 0, 0, RGB565_GREEN },
        { 0, 0, RGB565_YELLOW },
        { 0, 0, RGB565_BLUE },
        { 0, 0, RGB565_MAGENTA },
        { 0, 0, RGB565_CYAN },
        { 0, 0, RGB565_WHITE },
};

void
__dbg_heart_beat(enum heart_beat cause) /* 16bpp R:G:B = 5:6:5 only */
{
#define LINE_STEP       2
        struct intr_state_rgb16 *intr_state_rgb16 = 
            &__intr_state_rgb16[cause & 0x7];
        uint16_t *fb = (uint16_t *)bootinfo->fb_addr;
        int hline = bootinfo->fb_width;
        uint16_t color = intr_state_rgb16->color;
        int i;

        fb += (cause & 0x7) * bootinfo->fb_line_bytes * LINE_STEP;
        if (++intr_state_rgb16->cnt > hline)
                intr_state_rgb16->cnt = 0, intr_state_rgb16->phase ^= 1;
        
        for (i = 0; i < 8; i++)
                *(fb + i) = color;
        *(fb + intr_state_rgb16->cnt) =
            intr_state_rgb16->phase ? ~color : color;
#undef LINE_STEP
}
#endif /* HPC_DEBUG_INTERRUPT_MONITOR */