linux-imx

/*

 *  PS3 virtual uart

 *

 *  Copyright (C) 2006 Sony Computer Entertainment Inc.

 *  Copyright 2006 Sony Corp.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 of the License.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

​

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/module.h>

#include <linux/interrupt.h>

#include <linux/workqueue.h>

#include <linux/bitops.h>

#include <asm/ps3.h>

​

#include <asm/firmware.h>

#include <asm/lv1call.h>

​

#include "vuart.h"

​

MODULE_AUTHOR("Sony Corporation");

MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("PS3 vuart");

​

/**

 * vuart - An inter-partition data link service.

 *  port 0: PS3 AV Settings.

 *  port 2: PS3 System Manager.

 *

 * The vuart provides a bi-directional byte stream data link between logical

 * partitions.  Its primary role is as a communications link between the guest

 * OS and the system policy module.  The current HV does not support any

 * connections other than those listed.

 */

​

enum {PORT_COUNT = 3,};

​

enum vuart_param {

    PARAM_TX_TRIGGER = 0,

    PARAM_RX_TRIGGER = 1,

    PARAM_INTERRUPT_MASK = 2,

    PARAM_RX_BUF_SIZE = 3, /* read only */

    PARAM_RX_BYTES = 4, /* read only */

    PARAM_TX_BUF_SIZE = 5, /* read only */

    PARAM_TX_BYTES = 6, /* read only */

    PARAM_INTERRUPT_STATUS = 7, /* read only */

};

​

enum vuart_interrupt_bit {

    INTERRUPT_BIT_TX = 0,