threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#include <linux/types.h>
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#include <asm/simd.h>
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#define LZ4_FAST_MARGIN (128)
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#if defined(CONFIG_ARM64) && defined(CONFIG_KERNEL_MODE_NEON)
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#include <asm/neon.h>
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#include <asm/cputype.h>
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asmlinkage int _lz4_decompress_asm(uint8_t **dst_ptr, uint8_t *dst_begin,
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uint8_t *dst_end, const uint8_t **src_ptr,
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const uint8_t *src_end, bool dip);
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asmlinkage int _lz4_decompress_asm_noprfm(uint8_t **dst_ptr, uint8_t *dst_begin,
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uint8_t *dst_end, const uint8_t **src_ptr,
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const uint8_t *src_end, bool dip);
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static inline int lz4_decompress_accel_enable(void)
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{
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return may_use_simd();
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}
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extern int (*lz4_decompress_asm_fn[])(uint8_t **dst_ptr, uint8_t *dst_begin,
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uint8_t *dst_end, const uint8_t **src_ptr,
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const uint8_t *src_end, bool dip);
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static inline ssize_t lz4_decompress_asm(
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uint8_t **dst_ptr, uint8_t *dst_begin, uint8_t *dst_end,
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const uint8_t **src_ptr, const uint8_t *src_end, bool dip)
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{
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int ret;
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kernel_neon_begin();
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ret = lz4_decompress_asm_fn[smp_processor_id()](dst_ptr, dst_begin,
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dst_end, src_ptr,
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src_end, dip);
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kernel_neon_end();
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return (ssize_t)ret;
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}
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#define __ARCH_HAS_LZ4_ACCELERATOR
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#else
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static inline int lz4_decompress_accel_enable(void)
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{
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return 0;
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}
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static inline ssize_t lz4_decompress_asm(
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uint8_t **dst_ptr, uint8_t *dst_begin, uint8_t *dst_end,
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const uint8_t **src_ptr, const uint8_t *src_end, bool dip)
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{
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return 0;
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}
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#endif
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