In Linux v6.13, commit b129125e1f96 ("arm64: asm-offsets: remove
DMA_{TO,FROM}_DEVICE") removes the definitions DMA_TO/FROM_DEVICE from
the assembly header file 'asm-offsets.h' which is used by the functions
__dma_map_area() and __dma_unmap_area() in nvmap_cache_maint.S.
From reviewing the NVMAP code, the function __dma_unmap_area() is never
used and so we can simply remove this. Split the __dma_map_area() into
two functions __dma_map_area_to_device() and
__dma_map_area_from_device() to avoid having to pass the direction.
Bug 4991895
Change-Id: I4a0f658401beff5c5e5457de72050b21acf820fa
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3261710
(cherry picked from commit de3a6ce1cbff438cba468c5cf817e3fe297d47a0)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3499753
Tested-by: Brad Griffis <bgriffis@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
For the assembly code in the NVMAP cache maintenance source file it is
only necessary to use the SYM_FUNC_START/END macros. For NVMAP we don't
need to use the SYM_FUNC_START/END_PI variants (which add the __pi
prefix for position independent code) because they are only needed for
assembly code called early in boot prior to virtualisation being
enabled. Therefore, simplify the code to simply use the
SYM_FUNC_START/END macros and remove the kernel version check.
Bug 4119327
Change-Id: I53ed9e0d5300085afa45075ce19b65ff68605314
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2980961
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Ketan Patil <ketanp@nvidia.com>
