diff options
Diffstat (limited to 'arch/riscv/lib')
| -rw-r--r-- | arch/riscv/lib/Makefile | 3 | ||||
| -rw-r--r-- | arch/riscv/lib/crc32-riscv.c (renamed from arch/riscv/lib/crc32.c) | 25 |
2 files changed, 22 insertions, 6 deletions
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile index 8eec6b69a875..79368a895fee 100644 --- a/arch/riscv/lib/Makefile +++ b/arch/riscv/lib/Makefile @@ -15,8 +15,7 @@ endif lib-$(CONFIG_MMU) += uaccess.o lib-$(CONFIG_64BIT) += tishift.o lib-$(CONFIG_RISCV_ISA_ZICBOZ) += clear_page.o -lib-$(CONFIG_RISCV_ISA_ZBC) += crc32.o - +obj-$(CONFIG_CRC32_ARCH) += crc32-riscv.o obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o lib-$(CONFIG_RISCV_ISA_V) += xor.o lib-$(CONFIG_RISCV_ISA_V) += riscv_v_helpers.o diff --git a/arch/riscv/lib/crc32.c b/arch/riscv/lib/crc32-riscv.c index d7dc599af3ef..53d56ab422c7 100644 --- a/arch/riscv/lib/crc32.c +++ b/arch/riscv/lib/crc32-riscv.c @@ -14,6 +14,7 @@ #include <linux/crc32poly.h> #include <linux/crc32.h> #include <linux/byteorder/generic.h> +#include <linux/module.h> /* * Refer to https://www.corsix.org/content/barrett-reduction-polynomials for @@ -217,17 +218,19 @@ legacy: return crc_fb(crc, p, len); } -u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32_le_arch(u32 crc, const u8 *p, size_t len) { return crc32_le_generic(crc, p, len, CRC32_POLY_LE, CRC32_POLY_QT_LE, crc32_le_base); } +EXPORT_SYMBOL(crc32_le_arch); -u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32c_le_arch(u32 crc, const u8 *p, size_t len) { return crc32_le_generic(crc, p, len, CRC32C_POLY_LE, - CRC32C_POLY_QT_LE, __crc32c_le_base); + CRC32C_POLY_QT_LE, crc32c_le_base); } +EXPORT_SYMBOL(crc32c_le_arch); static inline u32 crc32_be_unaligned(u32 crc, unsigned char const *p, size_t len) @@ -253,7 +256,7 @@ static inline u32 crc32_be_unaligned(u32 crc, unsigned char const *p, return crc; } -u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32_be_arch(u32 crc, const u8 *p, size_t len) { size_t offset, head_len, tail_len; unsigned long const *p_ul; @@ -292,3 +295,17 @@ u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) legacy: return crc32_be_base(crc, p, len); } +EXPORT_SYMBOL(crc32_be_arch); + +u32 crc32_optimizations(void) +{ + if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC)) + return CRC32_LE_OPTIMIZATION | + CRC32_BE_OPTIMIZATION | + CRC32C_OPTIMIZATION; + return 0; +} +EXPORT_SYMBOL(crc32_optimizations); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Accelerated CRC32 implementation with Zbc extension"); |