linux-imx

/*

 *  acpi_ipmi.c - ACPI IPMI opregion

 *

 *  Copyright (C) 2010, 2013 Intel Corporation

 *    Author: Zhao Yakui <yakui.zhao@intel.com>

 *            Lv Zheng <lv.zheng@intel.com>

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 *

 *  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; either version 2 of the License, or (at

 *  your option) any later version.

 *

 *  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.

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 */

​

#include <linux/module.h>

#include <linux/acpi.h>

#include <linux/ipmi.h>

#include <linux/spinlock.h>

​

MODULE_AUTHOR("Zhao Yakui");

MODULE_DESCRIPTION("ACPI IPMI Opregion driver");

MODULE_LICENSE("GPL");

​

#define ACPI_IPMI_OK            0

#define ACPI_IPMI_TIMEOUT       0x10

#define ACPI_IPMI_UNKNOWN       0x07

/* the IPMI timeout is 5s */

#define IPMI_TIMEOUT            (5000)

#define ACPI_IPMI_MAX_MSG_LENGTH    64

​

struct acpi_ipmi_device {

    /* the device list attached to driver_data.ipmi_devices */

    struct list_head head;

​

    /* the IPMI request message list */

    struct list_head tx_msg_list;

​

    spinlock_t tx_msg_lock;

    acpi_handle handle;

    struct device *dev;

    struct ipmi_user *user_interface;

    int ipmi_ifnum; /* IPMI interface number */

    long curr_msgid;

    bool dead;

    struct kref kref;

};

​

struct ipmi_driver_data {

    struct list_head ipmi_devices;

    struct ipmi_smi_watcher bmc_events;

    const struct ipmi_user_hndl ipmi_hndlrs;

    struct mutex ipmi_lock;

​

    /*

     * NOTE: IPMI System Interface Selection