mirror of
https://github.com/NVIDIA/open-gpu-kernel-modules.git
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239 lines
6.8 KiB
C
239 lines
6.8 KiB
C
/*
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* SPDX-FileCopyrightText: Copyright (c) 2017-2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _IOCTL_NVSWITCH_H_
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#define _IOCTL_NVSWITCH_H_
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "ioctl_common_nvswitch.h"
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#include "nvCpuUuid.h"
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/* 4 chars for "SWX-" prefix + 36 chars for UUID string + 1 char for '\0' */
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#define NVSWITCH_UUID_STRING_LENGTH 41
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#define NVSWITCH_NIBBLE_TO_CHAR(nibble) \
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(((nibble) > 9) ? (((nibble) - 10) + 'A') : ((nibble) + '0'))
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static NV_INLINE
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NvU32 nvswitch_uuid_to_string(NvUuid *uuid, char *str, NvU32 strLen)
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{
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int i;
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int j = 0;
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if ((uuid == NULL) || (str == NULL) || (strLen < NVSWITCH_UUID_STRING_LENGTH))
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{
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return 0;
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}
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str[j++] = 'S';
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str[j++] = 'W';
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str[j++] = 'X';
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str[j++] = '-';
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for (i = 0; i < NV_UUID_LEN; i++)
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{
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if ((i == 4) || (i == 6) || (i == 8) || (i == 10))
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{
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str[j++] = '-';
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}
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str[j++] = NVSWITCH_NIBBLE_TO_CHAR((uuid->uuid[i] & 0xF0) >> 4);
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str[j++] = NVSWITCH_NIBBLE_TO_CHAR(uuid->uuid[i] & 0x0F);
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}
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str[j++] = '\0';
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return j;
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}
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/*
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* This file defines IOCTL calls that work with nvidia-nvswitchctl
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* (device agnostic) node.
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*/
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#define NVSWITCH_VERSION_STRING_LENGTH 64
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/*
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* Version string
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*/
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typedef struct
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{
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char version[NVSWITCH_VERSION_STRING_LENGTH];
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} NVSWITCH_VERSION;
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/*
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* NVSWITCH_CTL_CHECK_VERSION
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*
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* The interface will check if the client's version is supported by the driver.
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*
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* Parameters:
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* user[in]
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* Version of the interface that the client is compiled with.
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* kernel[out]
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* Version of the interface that the kernel driver is compiled with.
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* is_compatible[out]
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* Set to true, if user and kernel version are compatible.
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*/
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typedef struct
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{
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NVSWITCH_VERSION user;
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NVSWITCH_VERSION kernel;
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NvBool is_compatible;
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} NVSWITCH_CHECK_VERSION_PARAMS;
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/*
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* Max devices supported by the driver
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*
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* See ctrl_dev_nvswitch.h for preprocessor definition modification guidelines.
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*/
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#define NVSWITCH_MAX_DEVICES 64
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/*
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* NVSWITCH_CTL_GET_DEVICES
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*
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* This control call will be removed soon. Use NVSWITCH_CTL_GET_DEVICES_V2 instead.
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*
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* Provides information about registered NvSwitch devices.
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*
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* Parameters:
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* deviceInstance[out]
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* Device instance of the device. This is same as the device minor number
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* for Linux platforms.
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*/
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typedef struct
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{
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NvU32 deviceInstance;
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NvU32 pciDomain;
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NvU32 pciBus;
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NvU32 pciDevice;
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NvU32 pciFunction;
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_DEVICE_INSTANCE_INFO;
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typedef struct
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{
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NvU32 deviceCount;
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NVSWITCH_DEVICE_INSTANCE_INFO info[NVSWITCH_MAX_DEVICES];
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_GET_DEVICES_PARAMS;
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/*
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* NVSWITCH_CTL_GET_DEVICES_V2
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*
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* Provides information about registered NvSwitch devices.
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* V2 adds a UUID field to the device instance info struct
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*
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* Parameters:
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* deviceInstance[out]
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* Device instance of the device. This is same as the device minor number
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* for Linux platforms.
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*/
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typedef struct
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{
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NvU32 deviceInstance;
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NvUuid uuid;
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NvU32 pciDomain;
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NvU32 pciBus;
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NvU32 pciDevice;
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NvU32 pciFunction;
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NVSWITCH_DRIVER_FABRIC_STATE driverState;
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NVSWITCH_DEVICE_FABRIC_STATE deviceState;
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NVSWITCH_DEVICE_BLACKLIST_REASON deviceReason;
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NvU32 physId;
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_DEVICE_INSTANCE_INFO_V2;
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#define NVSWITCH_INVALID_PHYS_ID NV_U32_MAX
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typedef struct
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{
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NvU32 deviceCount;
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NVSWITCH_DEVICE_INSTANCE_INFO_V2 info[NVSWITCH_MAX_DEVICES];
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_GET_DEVICES_V2_PARAMS;
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#define NVSWITCH_DEVICE_NAME_STRING_LENGTH 10
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/*
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* CTRL_NVSWITCH_GET_DEVICE_NODES
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*
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* Provides a mapping of the VMWare kernel device names (vmfgx[N]) and registered
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* NVSwitch devices (nvidia-nvswitch[N]).
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*
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* This IOCTL is only implemented for VMWare.
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*
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* Parameters:
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* deviceInstance[out]
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* Device instance of the device. This is same as the device minor number
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* for VMWare platforms.
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* dev_name[out]
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* VMWare kernel device name of the nvswitch device (vmfgx[N])
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*/
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typedef struct
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{
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NvU32 deviceInstance;
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NvUuid uuid;
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NvU8 dev_name[NVSWITCH_DEVICE_NAME_STRING_LENGTH];
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_DEVICE_NODE_INFO;
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typedef struct
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{
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NvU32 deviceCount;
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NVSWITCH_DEVICE_NODE_INFO info[NVSWITCH_MAX_DEVICES];
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/* See ctrl_dev_nvswitch.h for struct definition modification guidelines */
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} NVSWITCH_GET_DEVICE_NODES_PARAMS;
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#define CTRL_NVSWITCH_GET_DEVICES 0x01
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#define CTRL_NVSWITCH_CHECK_VERSION 0x02
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#define CTRL_NVSWITCH_GET_DEVICES_V2 0x03
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#define CTRL_NVSWITCH_GET_DEVICE_NODES 0x04
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/*
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* Nvswitchctl (device agnostic) IOCTLs
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*/
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#define IOCTL_NVSWITCH_GET_DEVICES \
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NVSWITCH_IOCTL_CODE(NVSWITCH_CTL_IO_TYPE, CTRL_NVSWITCH_GET_DEVICES, NVSWITCH_GET_DEVICES_PARAMS, \
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NVSWITCH_IO_READ_ONLY)
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#define IOCTL_NVSWITCH_CHECK_VERSION \
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NVSWITCH_IOCTL_CODE(NVSWITCH_CTL_IO_TYPE, CTRL_NVSWITCH_CHECK_VERSION, NVSWITCH_CHECK_VERSION_PARAMS, \
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NVSWITCH_IO_WRITE_READ)
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#define IOCTL_NVSWITCH_GET_DEVICES_V2 \
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NVSWITCH_IOCTL_CODE(NVSWITCH_CTL_IO_TYPE, CTRL_NVSWITCH_GET_DEVICES_V2, NVSWITCH_GET_DEVICES_V2_PARAMS, \
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NVSWITCH_IO_READ_ONLY)
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#define IOCTL_NVSWITCH_GET_DEVICE_NODES \
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NVSWITCH_IOCTL_CODE(NVSWITCH_CTL_IO_TYPE, CTRL_NVSWITCH_GET_DEVICE_NODES, NVSWITCH_GET_DEVICE_NODES_PARAMS, \
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NVSWITCH_IO_READ_ONLY)
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#ifdef __cplusplus
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}
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#endif
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#endif //_IOCTL_NVSWITCH_H_
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