diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index dcfdb7f1dae97..0f88123925a4f 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -110,6 +110,7 @@ config SPARC64 select HAVE_SETUP_PER_CPU_AREA select NEED_PER_CPU_EMBED_FIRST_CHUNK select NEED_PER_CPU_PAGE_FIRST_CHUNK + select ARCH_HAS_CRC32 config ARCH_PROC_KCORE_TEXT def_bool y diff --git a/arch/sparc/crypto/Kconfig b/arch/sparc/crypto/Kconfig index cfe5102b1c683..e858597de89db 100644 --- a/arch/sparc/crypto/Kconfig +++ b/arch/sparc/crypto/Kconfig @@ -16,16 +16,6 @@ config CRYPTO_DES_SPARC64 Architecture: sparc64 -config CRYPTO_CRC32C_SPARC64 - tristate "CRC32c" - depends on SPARC64 - select CRYPTO_HASH - select CRC32 - help - CRC32c CRC algorithm with the iSCSI polynomial (RFC 3385 and RFC 3720) - - Architecture: sparc64 - config CRYPTO_MD5_SPARC64 tristate "Digests: MD5" depends on SPARC64 diff --git a/arch/sparc/crypto/Makefile b/arch/sparc/crypto/Makefile index d257186c27d12..a2d7fca40cb4b 100644 --- a/arch/sparc/crypto/Makefile +++ b/arch/sparc/crypto/Makefile @@ -12,8 +12,6 @@ obj-$(CONFIG_CRYPTO_AES_SPARC64) += aes-sparc64.o obj-$(CONFIG_CRYPTO_DES_SPARC64) += des-sparc64.o obj-$(CONFIG_CRYPTO_CAMELLIA_SPARC64) += camellia-sparc64.o -obj-$(CONFIG_CRYPTO_CRC32C_SPARC64) += crc32c-sparc64.o - sha1-sparc64-y := sha1_asm.o sha1_glue.o sha256-sparc64-y := sha256_asm.o sha256_glue.o sha512-sparc64-y := sha512_asm.o sha512_glue.o @@ -22,5 +20,3 @@ md5-sparc64-y := md5_asm.o md5_glue.o aes-sparc64-y := aes_asm.o aes_glue.o des-sparc64-y := des_asm.o des_glue.o camellia-sparc64-y := camellia_asm.o camellia_glue.o - -crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o diff --git a/arch/sparc/crypto/crc32c_glue.c b/arch/sparc/crypto/crc32c_glue.c deleted file mode 100644 index 913b9a09e885d..0000000000000 --- a/arch/sparc/crypto/crc32c_glue.c +++ /dev/null @@ -1,184 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* Glue code for CRC32C optimized for sparc64 crypto opcodes. - * - * This is based largely upon arch/x86/crypto/crc32c-intel.c - * - * Copyright (C) 2008 Intel Corporation - * Authors: Austin Zhang - * Kent Liu - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include - -#include - -#include -#include -#include - -#include "opcodes.h" - -/* - * Setting the seed allows arbitrary accumulators and flexible XOR policy - * If your algorithm starts with ~0, then XOR with ~0 before you set - * the seed. - */ -static int crc32c_sparc64_setkey(struct crypto_shash *hash, const u8 *key, - unsigned int keylen) -{ - u32 *mctx = crypto_shash_ctx(hash); - - if (keylen != sizeof(u32)) - return -EINVAL; - *mctx = get_unaligned_le32(key); - return 0; -} - -static int crc32c_sparc64_init(struct shash_desc *desc) -{ - u32 *mctx = crypto_shash_ctx(desc->tfm); - u32 *crcp = shash_desc_ctx(desc); - - *crcp = *mctx; - - return 0; -} - -extern void crc32c_sparc64(u32 *crcp, const u64 *data, unsigned int len); - -static u32 crc32c_compute(u32 crc, const u8 *data, unsigned int len) -{ - unsigned int n = -(uintptr_t)data & 7; - - if (n) { - /* Data isn't 8-byte aligned. Align it. */ - n = min(n, len); - crc = __crc32c_le(crc, data, n); - data += n; - len -= n; - } - n = len & ~7U; - if (n) { - crc32c_sparc64(&crc, (const u64 *)data, n); - data += n; - len -= n; - } - if (len) - crc = __crc32c_le(crc, data, len); - return crc; -} - -static int crc32c_sparc64_update(struct shash_desc *desc, const u8 *data, - unsigned int len) -{ - u32 *crcp = shash_desc_ctx(desc); - - *crcp = crc32c_compute(*crcp, data, len); - return 0; -} - -static int __crc32c_sparc64_finup(const u32 *crcp, const u8 *data, - unsigned int len, u8 *out) -{ - put_unaligned_le32(~crc32c_compute(*crcp, data, len), out); - return 0; -} - -static int crc32c_sparc64_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *out) -{ - return __crc32c_sparc64_finup(shash_desc_ctx(desc), data, len, out); -} - -static int crc32c_sparc64_final(struct shash_desc *desc, u8 *out) -{ - u32 *crcp = shash_desc_ctx(desc); - - put_unaligned_le32(~*crcp, out); - return 0; -} - -static int crc32c_sparc64_digest(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *out) -{ - return __crc32c_sparc64_finup(crypto_shash_ctx(desc->tfm), data, len, - out); -} - -static int crc32c_sparc64_cra_init(struct crypto_tfm *tfm) -{ - u32 *key = crypto_tfm_ctx(tfm); - - *key = ~0; - - return 0; -} - -#define CHKSUM_BLOCK_SIZE 1 -#define CHKSUM_DIGEST_SIZE 4 - -static struct shash_alg alg = { - .setkey = crc32c_sparc64_setkey, - .init = crc32c_sparc64_init, - .update = crc32c_sparc64_update, - .final = crc32c_sparc64_final, - .finup = crc32c_sparc64_finup, - .digest = crc32c_sparc64_digest, - .descsize = sizeof(u32), - .digestsize = CHKSUM_DIGEST_SIZE, - .base = { - .cra_name = "crc32c", - .cra_driver_name = "crc32c-sparc64", - .cra_priority = SPARC_CR_OPCODE_PRIORITY, - .cra_flags = CRYPTO_ALG_OPTIONAL_KEY, - .cra_blocksize = CHKSUM_BLOCK_SIZE, - .cra_ctxsize = sizeof(u32), - .cra_module = THIS_MODULE, - .cra_init = crc32c_sparc64_cra_init, - } -}; - -static bool __init sparc64_has_crc32c_opcode(void) -{ - unsigned long cfr; - - if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO)) - return false; - - __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); - if (!(cfr & CFR_CRC32C)) - return false; - - return true; -} - -static int __init crc32c_sparc64_mod_init(void) -{ - if (sparc64_has_crc32c_opcode()) { - pr_info("Using sparc64 crc32c opcode optimized CRC32C implementation\n"); - return crypto_register_shash(&alg); - } - pr_info("sparc64 crc32c opcode not available.\n"); - return -ENODEV; -} - -static void __exit crc32c_sparc64_mod_fini(void) -{ - crypto_unregister_shash(&alg); -} - -module_init(crc32c_sparc64_mod_init); -module_exit(crc32c_sparc64_mod_fini); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("CRC32c (Castagnoli), sparc64 crc32c opcode accelerated"); - -MODULE_ALIAS_CRYPTO("crc32c"); - -#include "crop_devid.c" diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index ee5091dd67ed7..5724d0f356eb5 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -53,3 +53,5 @@ lib-$(CONFIG_SPARC64) += mcount.o ipcsum.o xor.o hweight.o ffs.o obj-$(CONFIG_SPARC64) += iomap.o obj-$(CONFIG_SPARC32) += atomic32.o obj-$(CONFIG_SPARC64) += PeeCeeI.o +obj-$(CONFIG_CRC32_ARCH) += crc32-sparc.o +crc32-sparc-y := crc32_glue.o crc32c_asm.o diff --git a/arch/sparc/lib/crc32_glue.c b/arch/sparc/lib/crc32_glue.c new file mode 100644 index 0000000000000..41076d2b1fd2d --- /dev/null +++ b/arch/sparc/lib/crc32_glue.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Glue code for CRC32C optimized for sparc64 crypto opcodes. + * + * This is based largely upon arch/x86/crypto/crc32c-intel.c + * + * Copyright (C) 2008 Intel Corporation + * Authors: Austin Zhang + * Kent Liu + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include + +static DEFINE_STATIC_KEY_FALSE(have_crc32c_opcode); + +u32 crc32_le_arch(u32 crc, const u8 *data, size_t len) +{ + return crc32_le_base(crc, data, len); +} +EXPORT_SYMBOL(crc32_le_arch); + +void crc32c_sparc64(u32 *crcp, const u64 *data, size_t len); + +u32 crc32c_le_arch(u32 crc, const u8 *data, size_t len) +{ + size_t n = -(uintptr_t)data & 7; + + if (!static_branch_likely(&have_crc32c_opcode)) + return crc32c_le_base(crc, data, len); + + if (n) { + /* Data isn't 8-byte aligned. Align it. */ + n = min(n, len); + crc = crc32c_le_base(crc, data, n); + data += n; + len -= n; + } + n = len & ~7U; + if (n) { + crc32c_sparc64(&crc, (const u64 *)data, n); + data += n; + len -= n; + } + if (len) + crc = crc32c_le_base(crc, data, len); + return crc; +} +EXPORT_SYMBOL(crc32c_le_arch); + +u32 crc32_be_arch(u32 crc, const u8 *data, size_t len) +{ + return crc32_be_base(crc, data, len); +} +EXPORT_SYMBOL(crc32_be_arch); + +static int __init crc32_sparc_init(void) +{ + unsigned long cfr; + + if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO)) + return 0; + + __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); + if (!(cfr & CFR_CRC32C)) + return 0; + + static_branch_enable(&have_crc32c_opcode); + pr_info("Using sparc64 crc32c opcode optimized CRC32C implementation\n"); + return 0; +} +arch_initcall(crc32_sparc_init); + +static void __exit crc32_sparc_exit(void) +{ +} +module_exit(crc32_sparc_exit); + +u32 crc32_optimizations(void) +{ + if (static_key_enabled(&have_crc32c_opcode)) + return CRC32C_OPTIMIZATION; + return 0; +} +EXPORT_SYMBOL(crc32_optimizations); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("CRC32c (Castagnoli), sparc64 crc32c opcode accelerated"); diff --git a/arch/sparc/crypto/crc32c_asm.S b/arch/sparc/lib/crc32c_asm.S similarity index 92% rename from arch/sparc/crypto/crc32c_asm.S rename to arch/sparc/lib/crc32c_asm.S index b8659a479242d..ee454fa6aed68 100644 --- a/arch/sparc/crypto/crc32c_asm.S +++ b/arch/sparc/lib/crc32c_asm.S @@ -3,7 +3,7 @@ #include #include -#include "opcodes.h" +#include "../crypto/opcodes.h" ENTRY(crc32c_sparc64) /* %o0=crc32p, %o1=data_ptr, %o2=len */