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video: tegra: nvmap: Simplify assembly macros

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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>
This commit is contained in:
Jon Hunter
2023-09-19 18:38:12 +01:00
committed by mobile promotions
parent 9fa11c36c1
commit 89a8096aff
1 changed files with 14 additions and 31 deletions
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45
drivers/video/tegra/nvmap/nvmap_cache_maint.S
View File

@@ -17,16 +17,6 @@
#include <asm/alternative.h>
#include <asm/asm-uaccess.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 18, 0)
#define NVMAP_SYM_FUNC_START(func) SYM_FUNC_START(__ip_##func)
#define NVMAP_SYM_FUNC_END(func) SYM_FUNC_END(__ip_##func)
#define NVMAP_SYM_FUNC_ALIAS(func) SYM_FUNC_ALIAS(func, __ip_##func)
#else
#define NVMAP_SYM_FUNC_START(func) SYM_FUNC_START_PI(func)
#define NVMAP_SYM_FUNC_END(func) SYM_FUNC_END_PI(func)
#define NVMAP_SYM_FUNC_ALIAS(func)
#endif
/*
* invalidate_icache_range(start,end)
*
@@ -63,14 +53,13 @@ SYM_FUNC_END(invalidate_icache_range)
* - kaddr - kernel address
* - size - size in question
*/
NVMAP_SYM_FUNC_START(__flush_dcache_area)
SYM_FUNC_START(__flush_dcache_area)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 14, 0)
add x1, x0, x1
#endif
dcache_by_line_op civac, sy, x0, x1, x2, x3
ret
NVMAP_SYM_FUNC_END(__flush_dcache_area)
NVMAP_SYM_FUNC_ALIAS(__flush_dcache_area)
SYM_FUNC_END(__flush_dcache_area)
/*
* __clean_dcache_area_pou(kaddr, size)
@@ -104,7 +93,7 @@ SYM_FUNC_END(__clean_dcache_area_pou)
* - size - size in question
*/
SYM_FUNC_START_LOCAL(__dma_inv_area)
NVMAP_SYM_FUNC_START(__inval_dcache_area)
SYM_FUNC_START(__inval_dcache_area)
/* FALLTHROUGH */
/*
@@ -130,8 +119,7 @@ NVMAP_SYM_FUNC_START(__inval_dcache_area)
b.lo 2b
dsb sy
ret
NVMAP_SYM_FUNC_END(__inval_dcache_area)
NVMAP_SYM_FUNC_ALIAS(__inval_dcache_area)
SYM_FUNC_END(__inval_dcache_area)
SYM_FUNC_END(__dma_inv_area)
/*
@@ -144,7 +132,7 @@ SYM_FUNC_END(__dma_inv_area)
* - size - size in question
*/
SYM_FUNC_START_LOCAL(__dma_clean_area)
NVMAP_SYM_FUNC_START(__clean_dcache_area_poc)
SYM_FUNC_START(__clean_dcache_area_poc)
/* FALLTHROUGH */
/*
@@ -157,8 +145,7 @@ NVMAP_SYM_FUNC_START(__clean_dcache_area_poc)
#endif
dcache_by_line_op cvac, sy, x0, x1, x2, x3
ret
NVMAP_SYM_FUNC_END(__clean_dcache_area_poc)
NVMAP_SYM_FUNC_ALIAS(__clean_dcache_area_poc)
SYM_FUNC_END(__clean_dcache_area_poc)
SYM_FUNC_END(__dma_clean_area)
/*
@@ -170,7 +157,7 @@ SYM_FUNC_END(__dma_clean_area)
* - kaddr - kernel address
* - size - size in question
*/
NVMAP_SYM_FUNC_START(__clean_dcache_area_pop)
SYM_FUNC_START(__clean_dcache_area_pop)
alternative_if_not ARM64_HAS_DCPOP
b __clean_dcache_area_poc
alternative_else_nop_endif
@@ -179,8 +166,7 @@ NVMAP_SYM_FUNC_START(__clean_dcache_area_pop)
#endif
dcache_by_line_op cvap, sy, x0, x1, x2, x3
ret
NVMAP_SYM_FUNC_END(__clean_dcache_area_pop)
NVMAP_SYM_FUNC_ALIAS(__clean_dcache_area_pop)
SYM_FUNC_END(__clean_dcache_area_pop)
/*
* __dma_flush_area(start, size)
@@ -190,14 +176,13 @@ NVMAP_SYM_FUNC_ALIAS(__clean_dcache_area_pop)
* - start - virtual start address of region
* - size - size in question
*/
NVMAP_SYM_FUNC_START(__dma_flush_area)
SYM_FUNC_START(__dma_flush_area)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 14, 0)
add x1, x0, x1
#endif
dcache_by_line_op civac, sy, x0, x1, x2, x3
ret
NVMAP_SYM_FUNC_END(__dma_flush_area)
NVMAP_SYM_FUNC_ALIAS(__dma_flush_area)
SYM_FUNC_END(__dma_flush_area)
/*
* __dma_map_area(start, size, dir)
@@ -205,12 +190,11 @@ NVMAP_SYM_FUNC_ALIAS(__dma_flush_area)
* - size - size of region
* - dir - DMA direction
*/
NVMAP_SYM_FUNC_START(__dma_map_area)
SYM_FUNC_START(__dma_map_area)
cmp w2, #DMA_FROM_DEVICE
b.eq __dma_inv_area
b __dma_clean_area
NVMAP_SYM_FUNC_END(__dma_map_area)
NVMAP_SYM_FUNC_ALIAS(__dma_map_area)
SYM_FUNC_END(__dma_map_area)
/*
* __dma_unmap_area(start, size, dir)
@@ -218,9 +202,8 @@ NVMAP_SYM_FUNC_ALIAS(__dma_map_area)
* - size - size of region
* - dir - DMA direction
*/
NVMAP_SYM_FUNC_START(__dma_unmap_area)
SYM_FUNC_START(__dma_unmap_area)
cmp w2, #DMA_TO_DEVICE
b.ne __dma_inv_area
ret
NVMAP_SYM_FUNC_END(__dma_unmap_area)
NVMAP_SYM_FUNC_ALIAS(__dma_unmap_area)
SYM_FUNC_END(__dma_unmap_area)