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dc0dc2e96a
Since tsg close refers to the ctrl node to revoke the share tokens, need to ensure that ctrl node remains active until after contained tsgs are released. Bug 3946749 Change-Id: I3b514f6d2a041cbf3d517f846f202f956747d726 Signed-off-by: Sagar Kamble <skamble@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2872115 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*
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* Copyright (c) 2011-2023, 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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NVGPU_IOCTL_CTRL_H__
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#define __NVGPU_IOCTL_CTRL_H__
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struct nvgpu_tsg;
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struct gk20a_ctrl_priv {
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struct device *dev;
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struct gk20a *g;
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struct nvgpu_clk_session *clk_session;
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struct nvgpu_cdev *cdev;
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#ifdef CONFIG_NVGPU_TSG_SHARING
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u64 device_instance_id;
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u64 tsg_share_token;
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struct nvgpu_list_node tsg_share_tokens_list;
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struct nvgpu_mutex tokens_lock;
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#endif
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/**
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* This ref is initialized during gk20a_ctrl_dev_open.
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* This is ref_get whenever a TSG is opened for a device.
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* This is ref_put whenever a TSG is released from a device.
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*/
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struct nvgpu_ref refcount;
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struct nvgpu_list_node list;
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struct {
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struct vm_area_struct *vma;
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bool vma_mapped;
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} usermode_vma;
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};
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void nvgpu_ioctl_ctrl_release(struct nvgpu_ref *ref);
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int gk20a_ctrl_dev_open(struct inode *inode, struct file *filp);
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int gk20a_ctrl_dev_release(struct inode *inode, struct file *filp);
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long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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int gk20a_ctrl_dev_mmap(struct file *filp, struct vm_area_struct *vma);
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void nvgpu_hide_usermode_for_poweroff(struct gk20a *g);
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void nvgpu_restore_usermode_for_poweron(struct gk20a *g);
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#ifdef CONFIG_NVGPU_TSG_SHARING
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u64 nvgpu_gpu_get_device_instance_id(struct gk20a_ctrl_priv *priv);
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int nvgpu_gpu_get_share_token(struct gk20a *g,
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u64 source_device_instance_id,
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u64 target_device_instance_id,
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struct nvgpu_tsg *tsg,
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u64 *share_token);
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int nvgpu_gpu_revoke_share_token(struct gk20a *g,
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u64 source_device_instance_id,
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u64 target_device_instance_id,
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u64 share_token,
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struct nvgpu_tsg *tsg);
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int nvgpu_gpu_tsg_revoke_share_tokens(struct gk20a *g,
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u64 source_device_instance_id,
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struct nvgpu_tsg *tsg,
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u32 *out_count);
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struct nvgpu_tsg *nvgpu_gpu_open_tsg_with_share_token(struct gk20a *g,
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u64 source_device_instance_id,
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u64 target_device_instance_id,
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u64 share_token);
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#endif
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#endif
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