mirror of
https://github.com/NVIDIA/open-gpu-kernel-modules.git
synced 2025-07-23 15:10:35 +02:00
55 lines
2.3 KiB
C
55 lines
2.3 KiB
C
/*******************************************************************************
|
|
Copyright (c) 2024 NVIDIA Corporation
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to
|
|
deal in the Software without restriction, including without limitation the
|
|
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
sell copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
DEALINGS IN THE SOFTWARE.
|
|
|
|
*******************************************************************************/
|
|
|
|
#ifndef __UVM_TEST_FILE_H__
|
|
#define __UVM_TEST_FILE_H__
|
|
|
|
#include "uvm_lock.h"
|
|
#include "uvm_test_ioctl.h"
|
|
#include <linux/radix-tree.h>
|
|
|
|
// A UVM test file is a simple file type used for unit testing but not
|
|
// production. Currently it provides PFN-based mmap to system pages, but can be
|
|
// extended for other purposes.
|
|
//
|
|
// Each file contains a struct page per file offset, freshly allocated and
|
|
// zeroed when that offset is first mmap'd. The page(s) persist until file
|
|
// release.
|
|
|
|
typedef struct
|
|
{
|
|
// This tree contains the struct page * for each file offset, if any
|
|
struct radix_tree_root page_tree;
|
|
|
|
// Lock protecting page_tree
|
|
uvm_mutex_t mutex;
|
|
} uvm_test_file_t;
|
|
|
|
|
|
NV_STATUS uvm_test_file_initialize(UVM_TEST_FILE_INITIALIZE_PARAMS *params, struct file *filp);
|
|
int uvm_test_file_mmap(uvm_test_file_t *test_file, struct vm_area_struct *vma);
|
|
NV_STATUS uvm_test_file_unmap(UVM_TEST_FILE_UNMAP_PARAMS *params, struct file *filp);
|
|
void uvm_test_file_release(struct file *filp, uvm_test_file_t *test_file);
|
|
|
|
#endif // __UVM_TEST_FILE_H__
|