Commit 289c270e authored by Eric Biggers's avatar Eric Biggers
Browse files

mips/crc32: expose CRC32 functions through lib 



Move the mips CRC32 assembly code into the lib directory and wire it up
to the library interface.  This allows it to be used without going
through the crypto API.  It remains usable via the crypto API too via
the shash algorithms that use the library interface.  Thus all the
arch-specific "shash" code becomes unnecessary and is removed.

Note: to see the diff from arch/mips/crypto/crc32-mips.c to
arch/mips/lib/crc32-mips.c, view this commit with 'git show -M10'.

Reviewed-by: default avatarArd Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20241202010844.144356-8-ebiggers@kernel.org


Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
parent 72f51a4f

arch/mips/Kconfig

+1 −4
Original line number Diff line number Diff line
@@ -1995,11 +1995,11 @@ config CPU_MIPSR5 
config CPU_MIPSR6

	bool

	default y if CPU_MIPS32_R6 || CPU_MIPS64_R6

	select ARCH_HAS_CRC32

	select CPU_HAS_RIXI

	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN

	select HAVE_ARCH_BITREVERSE

	select MIPS_ASID_BITS_VARIABLE

	select MIPS_CRC_SUPPORT

	select MIPS_SPRAM



config TARGET_ISA_REV
@@ -2475,9 +2475,6 @@ config MIPS_ASID_BITS 
config MIPS_ASID_BITS_VARIABLE

	bool



config MIPS_CRC_SUPPORT

	bool



# R4600 erratum.  Due to the lack of errata information the exact

# technical details aren't known.  I've experimentally found that disabling

# interrupts during indexed I-cache flushes seems to be sufficient to deal

arch/mips/configs/eyeq5_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -99,7 +99,6 @@ CONFIG_NFS_V4=y 
CONFIG_NFS_V4_1=y

CONFIG_NFS_V4_2=y

CONFIG_ROOT_NFS=y

CONFIG_CRYPTO_CRC32_MIPS=y

CONFIG_FRAME_WARN=1024

CONFIG_DEBUG_FS=y

# CONFIG_RCU_TRACE is not set

arch/mips/configs/eyeq6_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -102,7 +102,6 @@ CONFIG_NFS_V4=y 
CONFIG_NFS_V4_1=y

CONFIG_NFS_V4_2=y

CONFIG_ROOT_NFS=y

CONFIG_CRYPTO_CRC32_MIPS=y

CONFIG_FRAME_WARN=1024

CONFIG_DEBUG_FS=y

# CONFIG_RCU_TRACE is not set

arch/mips/configs/generic/32r6.config

+0 −2
Original line number Diff line number Diff line 
CONFIG_CPU_MIPS32_R6=y

CONFIG_HIGHMEM=y
 


CONFIG_CRYPTO_CRC32_MIPS=y

arch/mips/configs/generic/64r6.config

+0 −1
Original line number Diff line number Diff line
@@ -4,5 +4,4 @@ CONFIG_MIPS32_O32=y 
CONFIG_MIPS32_N32=y



CONFIG_CPU_HAS_MSA=y

CONFIG_CRYPTO_CRC32_MIPS=y

CONFIG_VIRTUALIZATION=y