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44c23acfa4
Add a mmap callback on the control device node for mapping the usermode
register region to userspace. Each such mapping is removed when the GPU
railgates, and brought back again on unrailgate.
The mapping offset must be 0 and its size must be 4 KB.
Bug 200145225
Bug 200541476
Change-Id: Ie8d3758da745b958376292691d7d1d02a24e7815
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1795819
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry picked from commit f33935f426
in dev-main)
Reviewed-on: https://git-master.nvidia.com/r/2170035
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
28 lines
1.1 KiB
C
28 lines
1.1 KiB
C
/*
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* Copyright (c) 2011-2017, 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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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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#endif
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