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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)

{

#ifdef CONFIG_FB

	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("Cannot find property 'screen'.");

	if (!prop->value)

		panic("Cannot find screen alias.");

	screen = ofw_tree_lookup(prop->value);

	if (!screen)

		panic("Cannot find %s.", prop->value);

	scr_init(screen);

	prop = ofw_tree_getprop(aliases, "keyboard");

	if (!prop)

		panic("Cannot find property 'keyboard'.");

	if (!prop->value)

		panic("Cannot find keyboard alias.");

	keyboard = ofw_tree_lookup(prop->value);

	if (!keyboard)

		panic("Cannot find %s.", prop->value);

	kbd_init(keyboard);

#else

	panic("Standard console requires FB, "

	      "but the kernel is not compiled with FB support.");

#endif

}

/** 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("Cannot find '/aliases'.");

	/* "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)

{

#ifdef CONFIG_FB

	scr_redraw();

#endif

	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;

	}

}

/** @}

 */