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62c03dfaef
Add a device node for management of nvs control fifo buffers for scheduling domains. The current design consists of a master structure struct nvgpu_nvs_domain_sched_ctrl for management of users as well as control queues. Initially all users are added as non-exclusive users. Subsequent changes will add support for IOCTLS to manage opening of Send/Receive and Event buffers, querying characteristics etc. In subsequent changes, a user that tries to open a Send/Receive queue will first try to reserve itself as an exclusive user and only if that succeeds can proceed with creation of both Send/Receive queues. Exclusive users will be reset to non-exclusive users just before they close their device node handle. Jira NVGPU-8128 Change-Id: I15a83f70cd49c685510a9fd5ea4476ebb3544378 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2691404 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> GVS: Gerrit_Virtual_Submit
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
/*
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* Copyright (c) 2021-2022, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef NVGPU_OS_LINUX_IOCTL_NVS_H
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#define NVGPU_OS_LINUX_IOCTL_NVS_H
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#include <nvgpu/types.h>
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struct inode;
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struct file;
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int nvgpu_nvs_dev_open(struct inode *inode, struct file *filp);
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int nvgpu_nvs_dev_release(struct inode *inode, struct file *filp);
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long nvgpu_nvs_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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ssize_t nvgpu_nvs_dev_read(struct file *filp, char __user *buf,
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size_t size, loff_t *off);
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struct nvgpu_nvs_domain *nvgpu_nvs_domain_get_from_file(int fd);
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int nvgpu_nvs_ctrl_fifo_ops_open(struct inode *inode, struct file *filp);
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int nvgpu_nvs_ctrl_fifo_ops_release(struct inode *inode, struct file *filp);
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#endif
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