Subversion Repositories HelenOS

/*

 * Copyright (C) 2006 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/drivers/kbd.h>

#include <genarch/ofw/ofw_tree.h>

#ifdef CONFIG_Z8530

#include <genarch/kbd/z8530.h>

#endif

#ifdef CONFIG_NS16550

#include <genarch/kbd/ns16550.h>

#endif

#include <arch/mm/page.h>

#include <arch/types.h>

#include <typedefs.h>

#include <align.h>

#include <func.h>

#include <print.h>

volatile uint8_t *kbd_virt_address = NULL;

kbd_type_t kbd_type = KBD_UNKNOWN;

/** Initialize keyboard.

 *

 * Traverse OpenFirmware device tree in order to find necessary

 * info about the keyboard device.

 *

 * @param node Keyboard device node.

 */

void kbd_init(ofw_tree_node_t *node)

{

	size_t offset;

	uintptr_t aligned_addr;

	ofw_tree_property_t *prop;

	const char *name;

	name = ofw_tree_node_name(node);

	/*

	 * Determine keyboard serial controller type.

	 */

	if (strcmp(name, "zs") == 0)

		kbd_type = KBD_Z8530;

	else if (strcmp(name, "su") == 0)

		kbd_type = KBD_NS16550;

	if (kbd_type == KBD_UNKNOWN) {

		printf("Unknown keyboard device.\n");

		return;

	}

	/*

	 * Read 'interrupts' property.

	 */

	uint32_t interrupts;

	prop = ofw_tree_getprop(node, "interrupts");

	if (!prop || !prop->value)

		panic("Can't find \"interrupts\" property.\n");

	interrupts = *((uint32_t *) prop->value);

	/*

	 * Read 'reg' property.

	 */

	prop = ofw_tree_getprop(node, "reg");

	if (!prop || !prop->value)

		panic("Can't find \"reg\" property.\n");

	uintptr_t pa;

	size_t size;

	int inr;

	switch (kbd_type) {

	case KBD_Z8530:

		size = ((ofw_fhc_reg_t *) prop->value)->size;

		if (!ofw_fhc_apply_ranges(node->parent, ((ofw_fhc_reg_t *) prop->value) , &pa)) {

			printf("Failed to determine keyboard address.\n");

			return;

		}

		if (!ofw_fhc_map_interrupt(node->parent, ((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) {

			printf("Failed to determine keyboard interrupt.\n");

			return;

		}

		break;

	case KBD_NS16550:

		size = ((ofw_ebus_reg_t *) prop->value)->size;

		if (!ofw_ebus_apply_ranges(node->parent, ((ofw_ebus_reg_t *) prop->value) , &pa)) {

			printf("Failed to determine keyboard address.\n");

			return;

		}

		if (!ofw_ebus_map_interrupt(node->parent, ((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) {

			printf("Failed to determine keyboard interrupt.\n");

			return;

		}

		break;

	default:

		panic("Unexpected type.\n");

	}

	/*

	 * We need to pass aligned address to hw_map().

	 * However, the physical keyboard address can

	 * be pretty much unaligned, depending on the

	 * underlying controller.

	 */

	aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);

	offset = pa - aligned_addr;

	kbd_virt_address = (uint8_t *) hw_map(aligned_addr, offset + size) + offset;

	switch (kbd_type) {

#ifdef CONFIG_Z8530

	case KBD_Z8530:

		z8530_init();

		break;

#endif

#ifdef CONFIG_NS16550

	case KBD_NS16550:

		ns16550_init();

		break;

#endif

	default:

		printf("Kernel is not compiled with the necessary keyboard driver this machine requires.\n");

	}

}

/** @}

 */