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/*
 * Copyright (c) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * 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.
 */

/** @addtogroup sparc64 
 * @{
 */
/** @file
 */

#include <arch/console.h>
#include <arch/types.h>

#include <arch/drivers/scr.h>
#include <arch/drivers/kbd.h>

#include <arch/drivers/sgcn.h>

#ifdef CONFIG_Z8530
#include <genarch/kbd/z8530.h>
#endif
#ifdef CONFIG_NS16550
#include <genarch/kbd/ns16550.h>
#endif

#include <console/chardev.h>
#include <console/console.h>
#include <arch/asm.h>
#include <arch/register.h>
#include <proc/thread.h>
#include <arch/mm/tlb.h>
#include <genarch/ofw/ofw_tree.h>
#include <arch.h>
#include <panic.h>
#include <func.h>
#include <print.h>

#define KEYBOARD_POLL_PAUSE 50000   /* 50ms */

/**
 * Initialize kernel console to use framebuffer and keyboard directly.
 * Called on UltraSPARC machines with standard keyboard and framebuffer.
 *
 * @param aliases   the "/aliases" OBP node 
 */
static void standard_console_init(ofw_tree_node_t *aliases)
{
    stdin = NULL;

    ofw_tree_property_t *prop;
    ofw_tree_node_t *screen;
    ofw_tree_node_t *keyboard;
    
    prop = ofw_tree_getprop(aliases, "screen");
    if (!prop)
        panic("Can't find property \"screen\".\n");
    if (!prop->value)
        panic("Can't find screen alias.\n");
    screen = ofw_tree_lookup(prop->value);
    if (!screen)
        panic("Can't find %s\n", prop->value);

    scr_init(screen);

    prop = ofw_tree_getprop(aliases, "keyboard");
    if (!prop)
        panic("Can't find property \"keyboard\".\n");
    if (!prop->value)
        panic("Can't find keyboard alias.\n");
    keyboard = ofw_tree_lookup(prop->value);
    if (!keyboard)
        panic("Can't find %s\n", prop->value);

    kbd_init(keyboard);
}

/** Initilize I/O on the Serengeti machine. */
static void serengeti_init(void)
{
    sgcn_init();
}

/**
 * Initialize input/output. Auto-detects the type of machine
 * and calls the appropriate I/O init routine. 
 */
void standalone_sparc64_console_init(void)
{
    ofw_tree_node_t *aliases;
    ofw_tree_property_t *prop;
    
    aliases = ofw_tree_lookup("/aliases");
    if (!aliases)
        panic("Can't find /aliases.\n");
    
    /* "def-cn" = "default console" */
    prop = ofw_tree_getprop(aliases, "def-cn");
    
    if ((!prop) || (!prop->value) || (strcmp(prop->value, "/sgcn") != 0)) {
        standard_console_init(aliases);
    } else {
        serengeti_init();
    }
}


/** Kernel thread for polling keyboard.
 *
 * @param arg Ignored.
 */
void kkbdpoll(void *arg)
{
    thread_detach(THREAD);

#ifdef CONFIG_Z8530
    if (kbd_type == KBD_Z8530) {
        /*
         * The z8530 driver is interrupt-driven.
         */
        return;
    }
#endif

#ifdef CONFIG_NS16550
#ifdef CONFIG_NS16550_INTERRUPT_DRIVEN
    if (kbd_type == KBD_NS16550) {
        /*
         * The ns16550 driver is interrupt-driven.
         */
        return;
    }
#endif
#endif
    while (1) {
#ifdef CONFIG_NS16550
#ifndef CONFIG_NS16550_INTERRUPT_DRIVEN
        if (kbd_type == KBD_NS16550)
            ns16550_poll();
#endif
#endif
#ifdef CONFIG_SGCN
        if (kbd_type == KBD_SGCN)
            sgcn_poll();
#endif
        thread_usleep(KEYBOARD_POLL_PAUSE);
    }
}

/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
    switch (kbd_type) {
#ifdef CONFIG_Z8530
    case KBD_Z8530:
        z8530_grab();
        break;
#endif
#ifdef CONFIG_NS16550
    case KBD_NS16550:
        ns16550_grab();
        break;
#endif
#ifdef CONFIG_SGCN
    case KBD_SGCN:
        sgcn_grab();
        break;
#endif
    default:
        break;
    }
}

/** Return console to userspace
 *
 */
void arch_release_console(void)
{
    switch (kbd_type) {
#ifdef CONFIG_Z8530
    case KBD_Z8530:
        z8530_release();
        break;
#endif
#ifdef CONFIG_NS16550
    case KBD_NS16550:
        ns16550_release();
        break;
#endif
#ifdef CONFIG_SGCN
    case KBD_SGCN:
        sgcn_release();
        break;
#endif
    default:
        break;
    }
}

/** @}
 */