linux-imx

/* SPDX-License-Identifier: GPL-2.0+

 *

 * linux/drivers/misc/ibmvmc.h

 *

 * IBM Power Systems Virtual Management Channel Support.

 *

 * Copyright (c) 2004, 2018 IBM Corp.

 *   Dave Engebretsen engebret@us.ibm.com

 *   Steven Royer seroyer@linux.vnet.ibm.com

 *   Adam Reznechek adreznec@linux.vnet.ibm.com

 *   Bryant G. Ly <bryantly@linux.vnet.ibm.com>

 */

#ifndef IBMVMC_H

#define IBMVMC_H

​

#include <linux/types.h>

#include <linux/cdev.h>

​

#include <asm/vio.h>

​

#define IBMVMC_PROTOCOL_VERSION    0x0101

​

#define MIN_BUF_POOL_SIZE 16

#define MIN_HMCS          1

#define MIN_MTU           4096

#define MAX_BUF_POOL_SIZE 64

#define MAX_HMCS          2

#define MAX_MTU           (4 * 4096)

#define DEFAULT_BUF_POOL_SIZE 32

#define DEFAULT_HMCS          1

#define DEFAULT_MTU           4096

#define HMC_ID_LEN        32

​

#define VMC_INVALID_BUFFER_ID 0xFFFF

​

/* ioctl numbers */

#define VMC_BASE         0xCC

#define VMC_IOCTL_SETHMCID   _IOW(VMC_BASE, 0x00, unsigned char *)

#define VMC_IOCTL_QUERY      _IOR(VMC_BASE, 0x01, struct ibmvmc_query_struct)

#define VMC_IOCTL_REQUESTVMC _IOR(VMC_BASE, 0x02, u32)

​

#define VMC_MSG_CAP          0x01

#define VMC_MSG_CAP_RESP     0x81

#define VMC_MSG_OPEN         0x02

#define VMC_MSG_OPEN_RESP    0x82

#define VMC_MSG_CLOSE        0x03

#define VMC_MSG_CLOSE_RESP   0x83

#define VMC_MSG_ADD_BUF      0x04

#define VMC_MSG_ADD_BUF_RESP 0x84

#define VMC_MSG_REM_BUF      0x05

#define VMC_MSG_REM_BUF_RESP 0x85

#define VMC_MSG_SIGNAL       0x06

​

#define VMC_MSG_SUCCESS 0

#define VMC_MSG_INVALID_HMC_INDEX 1

#define VMC_MSG_INVALID_BUFFER_ID 2

#define VMC_MSG_CLOSED_HMC        3

#define VMC_MSG_INTERFACE_FAILURE 4

#define VMC_MSG_NO_BUFFER         5

​

#define VMC_BUF_OWNER_ALPHA 0

#define VMC_BUF_OWNER_HV    1

​