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/*
* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#ifndef __UAPI_LINUX_NVHV_WDT_HANDLER_IOCTL_H
#define __UAPI_LINUX_NVHV_WDT_HANDLER_IOCTL_H
#include <linux/ioctl.h>
#include <linux/types.h>
#if !defined(__KERNEL__)
#define __user
#endif
/* This matches what is defined in server, if server side
* changes, this has to be changed
*/
#define MAX_GUESTS_NUM 16
#define HV_GUEST_IOCTL_MAGIC 'X'
/* Get the state of all the guest VMs */
#define TEGRA_HV_WDT_H_GET_STATE _IOR(HV_GUEST_IOCTL_MAGIC, 0x00, \
struct hv_wdt_h_state_array)
/* Send command to Monitor about Guest VM action taken */
#define TEGRA_HV_WDT_H_CMD _IOW(HV_GUEST_IOCTL_MAGIC, 0x01, \
struct tegra_hv_wdt_h_cmd_array)
enum tegra_hv_wdt_h_cmd_id {
/* Application has handled the guest vm expiry synchronously */
MESSAGE_HANDLED_SYNC,
/* Application has handled the guest vm expiry asynchronously */
MESSAGE_HANDLED_ASYNC,
};
enum tegra_hv_wdt_h_state_id {
/* This is default state or monitor, This state is also reached once
* app updates driver about ASYNC or SYNC recovery triggered for Guest
*/
GUEST_STATE_INIT,
/* This is state, once monitor updates driver about GUEST WDT expiry */
GUEST_STATE_TIMER_EXPIRED,
/* Waiting for action from Application */
GUEST_STATE_WAIT_FOR_ACK,
};
struct hv_wdt_h_state_array {
/* State of each guest, use enum tegra_hv_wdt_h_state_id */
__u32 guest_state[MAX_GUESTS_NUM];
};
struct tegra_hv_wdt_h_cmd {
/* VMID for which command is expected */
__u32 vmid;
/* Command for the VMID, use tegra_hv_wdt_h_cmd_id */
__u32 command;
};
struct tegra_hv_wdt_h_cmd_array {
/* Number of vmids for which commands is to be issued */
__u32 num_vmids;
/* VMID and command to be issued, only first num_vmids will be used from
* below array
*/
struct tegra_hv_wdt_h_cmd commands[MAX_GUESTS_NUM];
};
#endif
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