@@ -70,10 +70,11 @@ config S390
select ARCH_BINFMT_ELF_STATE
select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
+ select ARCH_HAS_CRC32
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -793,11 +793,10 @@ CONFIG_CRYPTO_ZSTD=m
CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_USER_API_HASH=m
CONFIG_CRYPTO_USER_API_SKCIPHER=m
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
-CONFIG_CRYPTO_CRC32_S390=y
CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_SHA1_S390=m
CONFIG_CRYPTO_SHA256_S390=m
CONFIG_CRYPTO_SHA3_256_S390=m
CONFIG_CRYPTO_SHA3_512_S390=m
@@ -780,11 +780,10 @@ CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_JITTERENTROPY_OSR=1
CONFIG_CRYPTO_USER_API_HASH=m
CONFIG_CRYPTO_USER_API_SKCIPHER=m
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
-CONFIG_CRYPTO_CRC32_S390=y
CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_SHA1_S390=m
CONFIG_CRYPTO_SHA256_S390=m
CONFIG_CRYPTO_SHA3_256_S390=m
CONFIG_CRYPTO_SHA3_512_S390=m
@@ -1,21 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
menu "Accelerated Cryptographic Algorithms for CPU (s390)"
-config CRYPTO_CRC32_S390
- tristate "CRC32c and CRC32"
- depends on S390
- select CRYPTO_HASH
- select CRC32
- help
- CRC32c and CRC32 CRC algorithms
-
- Architecture: s390
-
- It is available with IBM z13 or later.
-
config CRYPTO_SHA512_S390
tristate "Hash functions: SHA-384 and SHA-512"
depends on S390
select CRYPTO_HASH
help
@@ -12,11 +12,9 @@ obj-$(CONFIG_CRYPTO_DES_S390) += des_s390.o
obj-$(CONFIG_CRYPTO_AES_S390) += aes_s390.o
obj-$(CONFIG_CRYPTO_PAES_S390) += paes_s390.o
obj-$(CONFIG_CRYPTO_CHACHA_S390) += chacha_s390.o
obj-$(CONFIG_S390_PRNG) += prng.o
obj-$(CONFIG_CRYPTO_GHASH_S390) += ghash_s390.o
-obj-$(CONFIG_CRYPTO_CRC32_S390) += crc32-vx_s390.o
obj-$(CONFIG_CRYPTO_HMAC_S390) += hmac_s390.o
obj-y += arch_random.o
-crc32-vx_s390-y := crc32-vx.o crc32le-vx.o crc32be-vx.o
chacha_s390-y := chacha-glue.o chacha-s390.o
deleted file mode 100644
@@ -1,306 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Crypto-API module for CRC-32 algorithms implemented with the
- * z/Architecture Vector Extension Facility.
- *
- * Copyright IBM Corp. 2015
- * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
- */
-#define KMSG_COMPONENT "crc32-vx"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/module.h>
-#include <linux/cpufeature.h>
-#include <linux/crc32.h>
-#include <crypto/internal/hash.h>
-#include <asm/fpu.h>
-#include "crc32-vx.h"
-
-#define CRC32_BLOCK_SIZE 1
-#define CRC32_DIGEST_SIZE 4
-
-#define VX_MIN_LEN 64
-#define VX_ALIGNMENT 16L
-#define VX_ALIGN_MASK (VX_ALIGNMENT - 1)
-
-struct crc_ctx {
- u32 key;
-};
-
-struct crc_desc_ctx {
- u32 crc;
-};
-
-/*
- * DEFINE_CRC32_VX() - Define a CRC-32 function using the vector extension
- *
- * Creates a function to perform a particular CRC-32 computation. Depending
- * on the message buffer, the hardware-accelerated or software implementation
- * is used. Note that the message buffer is aligned to improve fetch
- * operations of VECTOR LOAD MULTIPLE instructions.
- *
- */
-#define DEFINE_CRC32_VX(___fname, ___crc32_vx, ___crc32_sw) \
- static u32 __pure ___fname(u32 crc, \
- unsigned char const *data, size_t datalen) \
- { \
- unsigned long prealign, aligned, remaining; \
- DECLARE_KERNEL_FPU_ONSTACK16(vxstate); \
- \
- if (datalen < VX_MIN_LEN + VX_ALIGN_MASK) \
- return ___crc32_sw(crc, data, datalen); \
- \
- if ((unsigned long)data & VX_ALIGN_MASK) { \
- prealign = VX_ALIGNMENT - \
- ((unsigned long)data & VX_ALIGN_MASK); \
- datalen -= prealign; \
- crc = ___crc32_sw(crc, data, prealign); \
- data = (void *)((unsigned long)data + prealign); \
- } \
- \
- aligned = datalen & ~VX_ALIGN_MASK; \
- remaining = datalen & VX_ALIGN_MASK; \
- \
- kernel_fpu_begin(&vxstate, KERNEL_VXR_LOW); \
- crc = ___crc32_vx(crc, data, aligned); \
- kernel_fpu_end(&vxstate, KERNEL_VXR_LOW); \
- \
- if (remaining) \
- crc = ___crc32_sw(crc, data + aligned, remaining); \
- \
- return crc; \
- }
-
-DEFINE_CRC32_VX(crc32_le_vx, crc32_le_vgfm_16, crc32_le)
-DEFINE_CRC32_VX(crc32_be_vx, crc32_be_vgfm_16, crc32_be)
-DEFINE_CRC32_VX(crc32c_le_vx, crc32c_le_vgfm_16, __crc32c_le)
-
-
-static int crc32_vx_cra_init_zero(struct crypto_tfm *tfm)
-{
- struct crc_ctx *mctx = crypto_tfm_ctx(tfm);
-
- mctx->key = 0;
- return 0;
-}
-
-static int crc32_vx_cra_init_invert(struct crypto_tfm *tfm)
-{
- struct crc_ctx *mctx = crypto_tfm_ctx(tfm);
-
- mctx->key = ~0;
- return 0;
-}
-
-static int crc32_vx_init(struct shash_desc *desc)
-{
- struct crc_ctx *mctx = crypto_shash_ctx(desc->tfm);
- struct crc_desc_ctx *ctx = shash_desc_ctx(desc);
-
- ctx->crc = mctx->key;
- return 0;
-}
-
-static int crc32_vx_setkey(struct crypto_shash *tfm, const u8 *newkey,
- unsigned int newkeylen)
-{
- struct crc_ctx *mctx = crypto_shash_ctx(tfm);
-
- if (newkeylen != sizeof(mctx->key))
- return -EINVAL;
- mctx->key = le32_to_cpu(*(__le32 *)newkey);
- return 0;
-}
-
-static int crc32be_vx_setkey(struct crypto_shash *tfm, const u8 *newkey,
- unsigned int newkeylen)
-{
- struct crc_ctx *mctx = crypto_shash_ctx(tfm);
-
- if (newkeylen != sizeof(mctx->key))
- return -EINVAL;
- mctx->key = be32_to_cpu(*(__be32 *)newkey);
- return 0;
-}
-
-static int crc32le_vx_final(struct shash_desc *desc, u8 *out)
-{
- struct crc_desc_ctx *ctx = shash_desc_ctx(desc);
-
- *(__le32 *)out = cpu_to_le32p(&ctx->crc);
- return 0;
-}
-
-static int crc32be_vx_final(struct shash_desc *desc, u8 *out)
-{
- struct crc_desc_ctx *ctx = shash_desc_ctx(desc);
-
- *(__be32 *)out = cpu_to_be32p(&ctx->crc);
- return 0;
-}
-
-static int crc32c_vx_final(struct shash_desc *desc, u8 *out)
-{
- struct crc_desc_ctx *ctx = shash_desc_ctx(desc);
-
- /*
- * Perform a final XOR with 0xFFFFFFFF to be in sync
- * with the generic crc32c shash implementation.
- */
- *(__le32 *)out = ~cpu_to_le32p(&ctx->crc);
- return 0;
-}
-
-static int __crc32le_vx_finup(u32 *crc, const u8 *data, unsigned int len,
- u8 *out)
-{
- *(__le32 *)out = cpu_to_le32(crc32_le_vx(*crc, data, len));
- return 0;
-}
-
-static int __crc32be_vx_finup(u32 *crc, const u8 *data, unsigned int len,
- u8 *out)
-{
- *(__be32 *)out = cpu_to_be32(crc32_be_vx(*crc, data, len));
- return 0;
-}
-
-static int __crc32c_vx_finup(u32 *crc, const u8 *data, unsigned int len,
- u8 *out)
-{
- /*
- * Perform a final XOR with 0xFFFFFFFF to be in sync
- * with the generic crc32c shash implementation.
- */
- *(__le32 *)out = ~cpu_to_le32(crc32c_le_vx(*crc, data, len));
- return 0;
-}
-
-
-#define CRC32_VX_FINUP(alg, func) \
- static int alg ## _vx_finup(struct shash_desc *desc, const u8 *data, \
- unsigned int datalen, u8 *out) \
- { \
- return __ ## alg ## _vx_finup(shash_desc_ctx(desc), \
- data, datalen, out); \
- }
-
-CRC32_VX_FINUP(crc32le, crc32_le_vx)
-CRC32_VX_FINUP(crc32be, crc32_be_vx)
-CRC32_VX_FINUP(crc32c, crc32c_le_vx)
-
-#define CRC32_VX_DIGEST(alg, func) \
- static int alg ## _vx_digest(struct shash_desc *desc, const u8 *data, \
- unsigned int len, u8 *out) \
- { \
- return __ ## alg ## _vx_finup(crypto_shash_ctx(desc->tfm), \
- data, len, out); \
- }
-
-CRC32_VX_DIGEST(crc32le, crc32_le_vx)
-CRC32_VX_DIGEST(crc32be, crc32_be_vx)
-CRC32_VX_DIGEST(crc32c, crc32c_le_vx)
-
-#define CRC32_VX_UPDATE(alg, func) \
- static int alg ## _vx_update(struct shash_desc *desc, const u8 *data, \
- unsigned int datalen) \
- { \
- struct crc_desc_ctx *ctx = shash_desc_ctx(desc); \
- ctx->crc = func(ctx->crc, data, datalen); \
- return 0; \
- }
-
-CRC32_VX_UPDATE(crc32le, crc32_le_vx)
-CRC32_VX_UPDATE(crc32be, crc32_be_vx)
-CRC32_VX_UPDATE(crc32c, crc32c_le_vx)
-
-
-static struct shash_alg crc32_vx_algs[] = {
- /* CRC-32 LE */
- {
- .init = crc32_vx_init,
- .setkey = crc32_vx_setkey,
- .update = crc32le_vx_update,
- .final = crc32le_vx_final,
- .finup = crc32le_vx_finup,
- .digest = crc32le_vx_digest,
- .descsize = sizeof(struct crc_desc_ctx),
- .digestsize = CRC32_DIGEST_SIZE,
- .base = {
- .cra_name = "crc32",
- .cra_driver_name = "crc32-vx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .cra_blocksize = CRC32_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct crc_ctx),
- .cra_module = THIS_MODULE,
- .cra_init = crc32_vx_cra_init_zero,
- },
- },
- /* CRC-32 BE */
- {
- .init = crc32_vx_init,
- .setkey = crc32be_vx_setkey,
- .update = crc32be_vx_update,
- .final = crc32be_vx_final,
- .finup = crc32be_vx_finup,
- .digest = crc32be_vx_digest,
- .descsize = sizeof(struct crc_desc_ctx),
- .digestsize = CRC32_DIGEST_SIZE,
- .base = {
- .cra_name = "crc32be",
- .cra_driver_name = "crc32be-vx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .cra_blocksize = CRC32_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct crc_ctx),
- .cra_module = THIS_MODULE,
- .cra_init = crc32_vx_cra_init_zero,
- },
- },
- /* CRC-32C LE */
- {
- .init = crc32_vx_init,
- .setkey = crc32_vx_setkey,
- .update = crc32c_vx_update,
- .final = crc32c_vx_final,
- .finup = crc32c_vx_finup,
- .digest = crc32c_vx_digest,
- .descsize = sizeof(struct crc_desc_ctx),
- .digestsize = CRC32_DIGEST_SIZE,
- .base = {
- .cra_name = "crc32c",
- .cra_driver_name = "crc32c-vx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .cra_blocksize = CRC32_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct crc_ctx),
- .cra_module = THIS_MODULE,
- .cra_init = crc32_vx_cra_init_invert,
- },
- },
-};
-
-
-static int __init crc_vx_mod_init(void)
-{
- return crypto_register_shashes(crc32_vx_algs,
- ARRAY_SIZE(crc32_vx_algs));
-}
-
-static void __exit crc_vx_mod_exit(void)
-{
- crypto_unregister_shashes(crc32_vx_algs, ARRAY_SIZE(crc32_vx_algs));
-}
-
-module_cpu_feature_match(S390_CPU_FEATURE_VXRS, crc_vx_mod_init);
-module_exit(crc_vx_mod_exit);
-
-MODULE_AUTHOR("Hendrik Brueckner <brueckner@linux.vnet.ibm.com>");
-MODULE_DESCRIPTION("CRC-32 algorithms using z/Architecture Vector Extension Facility");
-MODULE_LICENSE("GPL");
-
-MODULE_ALIAS_CRYPTO("crc32");
-MODULE_ALIAS_CRYPTO("crc32-vx");
-MODULE_ALIAS_CRYPTO("crc32c");
-MODULE_ALIAS_CRYPTO("crc32c-vx");
@@ -22,5 +22,8 @@ obj-$(CONFIG_S390_MODULES_SANITY_TEST) += test_modules.o
obj-$(CONFIG_S390_MODULES_SANITY_TEST_HELPERS) += test_modules_helpers.o
lib-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
obj-$(CONFIG_EXPOLINE_EXTERN) += expoline.o
+
+obj-$(CONFIG_CRC32_ARCH) += crc32-s390.o
+crc32-s390-y := crc32-glue.o crc32le-vx.o crc32be-vx.o
new file mode 100644
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CRC-32 implemented with the z/Architecture Vector Extension Facility.
+ *
+ * Copyright IBM Corp. 2015
+ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ */
+#define KMSG_COMPONENT "crc32-vx"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/module.h>
+#include <linux/cpufeature.h>
+#include <linux/crc32.h>
+#include <asm/fpu.h>
+#include "crc32-vx.h"
+
+#define VX_MIN_LEN 64
+#define VX_ALIGNMENT 16L
+#define VX_ALIGN_MASK (VX_ALIGNMENT - 1)
+
+static DEFINE_STATIC_KEY_FALSE(have_vxrs);
+
+/*
+ * DEFINE_CRC32_VX() - Define a CRC-32 function using the vector extension
+ *
+ * Creates a function to perform a particular CRC-32 computation. Depending
+ * on the message buffer, the hardware-accelerated or software implementation
+ * is used. Note that the message buffer is aligned to improve fetch
+ * operations of VECTOR LOAD MULTIPLE instructions.
+ */
+#define DEFINE_CRC32_VX(___fname, ___crc32_vx, ___crc32_sw) \
+ u32 ___fname(u32 crc, const u8 *data, size_t datalen) \
+ { \
+ unsigned long prealign, aligned, remaining; \
+ DECLARE_KERNEL_FPU_ONSTACK16(vxstate); \
+ \
+ if (datalen < VX_MIN_LEN + VX_ALIGN_MASK || \
+ !static_branch_likely(&have_vxrs)) \
+ return ___crc32_sw(crc, data, datalen); \
+ \
+ if ((unsigned long)data & VX_ALIGN_MASK) { \
+ prealign = VX_ALIGNMENT - \
+ ((unsigned long)data & VX_ALIGN_MASK); \
+ datalen -= prealign; \
+ crc = ___crc32_sw(crc, data, prealign); \
+ data = (void *)((unsigned long)data + prealign); \
+ } \
+ \
+ aligned = datalen & ~VX_ALIGN_MASK; \
+ remaining = datalen & VX_ALIGN_MASK; \
+ \
+ kernel_fpu_begin(&vxstate, KERNEL_VXR_LOW); \
+ crc = ___crc32_vx(crc, data, aligned); \
+ kernel_fpu_end(&vxstate, KERNEL_VXR_LOW); \
+ \
+ if (remaining) \
+ crc = ___crc32_sw(crc, data + aligned, remaining); \
+ \
+ return crc; \
+ } \
+ EXPORT_SYMBOL(___fname);
+
+DEFINE_CRC32_VX(crc32_le_arch, crc32_le_vgfm_16, crc32_le_base)
+DEFINE_CRC32_VX(crc32_be_arch, crc32_be_vgfm_16, crc32_be_base)
+DEFINE_CRC32_VX(crc32c_le_arch, crc32c_le_vgfm_16, crc32c_le_base)
+
+static int __init crc32_s390_init(void)
+{
+ if (cpu_have_feature(S390_CPU_FEATURE_VXRS))
+ static_branch_enable(&have_vxrs);
+ return 0;
+}
+arch_initcall(crc32_s390_init);
+
+static void __exit crc32_s390_exit(void)
+{
+}
+module_exit(crc32_s390_exit);
+
+u32 crc32_optimizations(void)
+{
+ if (static_key_enabled(&have_vxrs))
+ return CRC32_LE_OPTIMIZATION |
+ CRC32_BE_OPTIMIZATION |
+ CRC32C_OPTIMIZATION;
+ return 0;
+}
+EXPORT_SYMBOL(crc32_optimizations);
+
+MODULE_AUTHOR("Hendrik Brueckner <brueckner@linux.vnet.ibm.com>");
+MODULE_DESCRIPTION("CRC-32 algorithms using z/Architecture Vector Extension Facility");
+MODULE_LICENSE("GPL");
similarity index 100%
rename from arch/s390/crypto/crc32-vx.h
rename to arch/s390/lib/crc32-vx.h
similarity index 100%
rename from arch/s390/crypto/crc32be-vx.c
rename to arch/s390/lib/crc32be-vx.c
similarity index 100%
rename from arch/s390/crypto/crc32le-vx.c
rename to arch/s390/lib/crc32le-vx.c