NVIDIA/open-gpu-kernel-modules
1
0
Fork 0
mirror of https://github.com/NVIDIA/open-gpu-kernel-modules.git synced 2026-02-08 00:59:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

580.65.06

Browse Source
This commit is contained in:
Maneet Singh
2025-08-04 11:15:02 -07:00
parent d890313300
commit 307159f262
1315 changed files with 477791 additions and 279973 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
kernel-open/common/inc/nv-pgprot.h
View File

@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: Copyright (c) 2015-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-FileCopyrightText: Copyright (c) 2015-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -63,16 +63,10 @@ static inline pgprot_t pgprot_modify_writecombine(pgprot_t old_prot)
extern NvBool nvos_is_chipset_io_coherent(void);
/*
* Don't rely on the kernel's definition of pgprot_noncached(), as on 64-bit
* ARM that's not for system memory, but device memory instead. For I/O cache
* coherent systems, use cached mappings instead of uncached.
* ARM that's not for system memory, but device memory instead.
*/
#define NV_PGPROT_UNCACHED(old_prot) \
((nvos_is_chipset_io_coherent()) ? \
(old_prot) : \
__pgprot_modify((old_prot), PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC)))
#elif defined(NVCPU_PPC64LE)
/* Don't attempt to mark sysmem pages as uncached on ppc64le */
#define NV_PGPROT_UNCACHED(old_prot) old_prot
__pgprot_modify((old_prot), PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC))
#else
#define NV_PGPROT_UNCACHED(old_prot) pgprot_noncached(old_prot)
#endif
@@ -94,32 +88,6 @@ extern NvBool nvos_is_chipset_io_coherent(void);
NV_PGPROT_WRITE_COMBINED_DEVICE(old_prot)
#define NV_PGPROT_READ_ONLY(old_prot) \
__pgprot(pgprot_val((old_prot)) & ~_PAGE_RW)
#elif defined(NVCPU_PPC64LE)
/*
* Some kernels use H_PAGE instead of _PAGE
*/
#if defined(_PAGE_RW)
#define NV_PAGE_RW _PAGE_RW
#elif defined(H_PAGE_RW)
#define NV_PAGE_RW H_PAGE_RW
#else
#warning "The kernel does not provide page protection defines!"
#endif
#if defined(_PAGE_4K_PFN)
#define NV_PAGE_4K_PFN _PAGE_4K_PFN
#elif defined(H_PAGE_4K_PFN)
#define NV_PAGE_4K_PFN H_PAGE_4K_PFN
#else
#undef NV_PAGE_4K_PFN
#endif
#define NV_PGPROT_WRITE_COMBINED_DEVICE(old_prot) \
pgprot_writecombine(old_prot)
/* Don't attempt to mark sysmem pages as write combined on ppc64le */
#define NV_PGPROT_WRITE_COMBINED(old_prot) old_prot
#define NV_PGPROT_READ_ONLY(old_prot) \
__pgprot(pgprot_val((old_prot)) & ~NV_PAGE_RW)
#elif defined(NVCPU_RISCV64)
#define NV_PGPROT_WRITE_COMBINED_DEVICE(old_prot) \
pgprot_writecombine(old_prot)