Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
arch/sparc/Kbuild | 1 +
arch/sparc/crypto/Makefile | 7 ++
arch/sparc/crypto/sha1_asm.S | 72 ++++++++++++++++
arch/sparc/crypto/sha1_glue.c | 181 +++++++++++++++++++++++++++++++++++++++++
arch/sparc/lib/ksyms.c | 4 +
crypto/Kconfig | 9 ++
6 files changed, 274 insertions(+)
create mode 100644 arch/sparc/crypto/Makefile
create mode 100644 arch/sparc/crypto/sha1_asm.S
create mode 100644 arch/sparc/crypto/sha1_glue.c
diff --git a/arch/sparc/Kbuild b/arch/sparc/Kbuild
index 5cd0116..675afa2 100644
--- a/arch/sparc/Kbuild
+++ b/arch/sparc/Kbuild
@@ -6,3 +6,4 @@ obj-y += kernel/
obj-y += mm/
obj-y += math-emu/
obj-y += net/
+obj-y += crypto/
diff --git a/arch/sparc/crypto/Makefile b/arch/sparc/crypto/Makefile
new file mode 100644
index 0000000..9760472
--- /dev/null
+++ b/arch/sparc/crypto/Makefile
@@ -0,0 +1,7 @@
+#
+# Arch-specific CryptoAPI modules.
+#
+
+obj-$(CONFIG_CRYPTO_SHA1_SPARC64) += sha1-sparc64.o
+
+sha1-sparc64-y := sha1_asm.o sha1_glue.o
diff --git a/arch/sparc/crypto/sha1_asm.S b/arch/sparc/crypto/sha1_asm.S
new file mode 100644
index 0000000..d2147eb
--- /dev/null
+++ b/arch/sparc/crypto/sha1_asm.S
@@ -0,0 +1,72 @@
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+
+ENTRY(sha1_sparc64_transform)
+ /* %o0 = digest, %o1 = data, %o2 = rounds */
+ VISEntryHalf
+ ld [%o0 + 0x00], %f0
+ ld [%o0 + 0x04], %f1
+ ld [%o0 + 0x08], %f2
+ andcc %o1, 0x7, %g0
+ ld [%o0 + 0x0c], %f3
+ bne,pn %xcc, 10f
+ ld [%o0 + 0x10], %f4
+
+1:
+ ldd [%o1 + 0x00], %f8
+ ldd [%o1 + 0x08], %f10
+ ldd [%o1 + 0x10], %f12
+ ldd [%o1 + 0x18], %f14
+ ldd [%o1 + 0x20], %f16
+ ldd [%o1 + 0x28], %f18
+ ldd [%o1 + 0x30], %f20
+ ldd [%o1 + 0x38], %f22
+
+ /* sha1 */
+ .word 0x81b02820
+
+ subcc %o2, 1, %o2
+ bne,pt %xcc, 1b
+ add %o1, 0x40, %o1
+
+5:
+ st %f0, [%o0 + 0x00]
+ st %f1, [%o0 + 0x04]
+ st %f2, [%o0 + 0x08]
+ st %f3, [%o0 + 0x0c]
+ st %f4, [%o0 + 0x10]
+ retl
+ VISExitHalf
+10:
+ alignaddr %o1, %g0, %o1
+
+ ldd [%o1 + 0x00], %f10
+1:
+ ldd [%o1 + 0x08], %f12
+ ldd [%o1 + 0x10], %f14
+ ldd [%o1 + 0x18], %f16
+ ldd [%o1 + 0x20], %f18
+ ldd [%o1 + 0x28], %f20
+ ldd [%o1 + 0x30], %f22
+ ldd [%o1 + 0x38], %f24
+ ldd [%o1 + 0x40], %f26
+
+ faligndata %f10, %f12, %f8
+ faligndata %f12, %f14, %f10
+ faligndata %f14, %f16, %f12
+ faligndata %f16, %f18, %f14
+ faligndata %f18, %f20, %f16
+ faligndata %f20, %f22, %f18
+ faligndata %f22, %f24, %f20
+ faligndata %f24, %f26, %f22
+
+ /* sha1 */
+ .word 0x81b02820
+
+ subcc %o2, 1, %o2
+ fsrc1 %f26, %f10
+ bne,pt %xcc, 1b
+ add %o1, 0x40, %o1
+
+ ba,a,pt %xcc, 5b
+ENDPROC(sha1_sparc64_transform)
diff --git a/arch/sparc/crypto/sha1_glue.c b/arch/sparc/crypto/sha1_glue.c
new file mode 100644
index 0000000..6bd1abc
--- /dev/null
+++ b/arch/sparc/crypto/sha1_glue.c
@@ -0,0 +1,181 @@
+/* Glue code for SHA1 hashing optimized for sparc64 crypto opcodes.
+ *
+ * This is based largely upon arch/x86/crypto/sha1_ssse3_glue.c
+ *
+ * Copyright (c) Alan Smithee.
+ * Copyright (c) Andrew McDonald <andrew@xxxxxxxxxxxxxxx>
+ * Copyright (c) Jean-Francois Dive <jef@xxxxxxxxxxx>
+ * Copyright (c) Mathias Krause <minipli@xxxxxxxxxxxxxx>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <crypto/internal/hash.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/cryptohash.h>
+#include <linux/types.h>
+#include <crypto/sha.h>
+
+#include <asm/pstate.h>
+#include <asm/elf.h>
+
+asmlinkage void sha1_sparc64_transform(u32 *digest, const char *data,
+ unsigned int rounds);
+
+static int sha1_sparc64_init(struct shash_desc *desc)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+
+ *sctx = (struct sha1_state){
+ .state = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 },
+ };
+
+ return 0;
+}
+
+static void __sha1_sparc64_update(struct sha1_state *sctx, const u8 *data,
+ unsigned int len, unsigned int partial)
+{
+ unsigned int done = 0;
+
+ sctx->count += len;
+ if (partial) {
+ done = SHA1_BLOCK_SIZE - partial;
+ memcpy(sctx->buffer + partial, data, done);
+ sha1_sparc64_transform(sctx->state, sctx->buffer, 1);
+ }
+ if (len - done >= SHA1_BLOCK_SIZE) {
+ const unsigned int rounds = (len - done) / SHA1_BLOCK_SIZE;
+
+ sha1_sparc64_transform(sctx->state, data + done, rounds);
+ done += rounds * SHA1_BLOCK_SIZE;
+ }
+
+ memcpy(sctx->buffer, data + done, len - done);
+}
+
+static int sha1_sparc64_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+ unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;
+
+ /* Handle the fast case right here */
+ if (partial + len < SHA1_BLOCK_SIZE) {
+ sctx->count += len;
+ memcpy(sctx->buffer + partial, data, len);
+ } else
+ __sha1_sparc64_update(sctx, data, len, partial);
+
+ return 0;
+}
+
+/* Add padding and return the message digest. */
+static int sha1_sparc64_final(struct shash_desc *desc, u8 *out)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+ unsigned int i, index, padlen;
+ __be32 *dst = (__be32 *)out;
+ __be64 bits;
+ static const u8 padding[SHA1_BLOCK_SIZE] = { 0x80, };
+
+ bits = cpu_to_be64(sctx->count << 3);
+
+ /* Pad out to 56 mod 64 and append length */
+ index = sctx->count % SHA1_BLOCK_SIZE;
+ padlen = (index < 56) ? (56 - index) : ((SHA1_BLOCK_SIZE+56) - index);
+
+ /* We need to fill a whole block for __sha1_sparc64_update() */
+ if (padlen <= 56) {
+ sctx->count += padlen;
+ memcpy(sctx->buffer + index, padding, padlen);
+ } else {
+ __sha1_sparc64_update(sctx, padding, padlen, index);
+ }
+ __sha1_sparc64_update(sctx, (const u8 *)&bits, sizeof(bits), 56);
+
+ /* Store state in digest */
+ for (i = 0; i < 5; i++)
+ dst[i] = cpu_to_be32(sctx->state[i]);
+
+ /* Wipe context */
+ memset(sctx, 0, sizeof(*sctx));
+
+ return 0;
+}
+
+static int sha1_sparc64_export(struct shash_desc *desc, void *out)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+
+ memcpy(out, sctx, sizeof(*sctx));
+
+ return 0;
+}
+
+static int sha1_sparc64_import(struct shash_desc *desc, const void *in)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+
+ memcpy(sctx, in, sizeof(*sctx));
+
+ return 0;
+}
+
+static struct shash_alg alg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .init = sha1_sparc64_init,
+ .update = sha1_sparc64_update,
+ .final = sha1_sparc64_final,
+ .export = sha1_sparc64_export,
+ .import = sha1_sparc64_import,
+ .descsize = sizeof(struct sha1_state),
+ .statesize = sizeof(struct sha1_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name= "sha1-sparc64",
+ .cra_priority = 150,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+};
+
+static bool __init sparc64_has_sha1_opcode(void)
+{
+ unsigned long cfr;
+
+ if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
+ return false;
+
+ __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
+ if (!(cfr & CFR_SHA1))
+ return false;
+
+ return true;
+}
+
+static int __init sha1_sparc64_mod_init(void)
+{
+ if (sparc64_has_sha1_opcode()) {
+ pr_info("Using sparc64 sha1 opcode optimized SHA-1 implementation\n");
+ return crypto_register_shash(&alg);
+ }
+ pr_info("sparc64 sha1 opcode not available.\n");
+ return -ENODEV;
+}
+
+static void __exit sha1_sparc64_mod_fini(void)
+{
+ crypto_unregister_shash(&alg);
+}
+
+module_init(sha1_sparc64_mod_init);
+module_exit(sha1_sparc64_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, sparc64 sha1 opcode accelerated");
+
+MODULE_ALIAS("sha1");
diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
index 3b31218..ee31b88 100644
--- a/arch/sparc/lib/ksyms.c
+++ b/arch/sparc/lib/ksyms.c
@@ -134,6 +134,10 @@ EXPORT_SYMBOL(copy_user_page);
void VISenter(void);
EXPORT_SYMBOL(VISenter);
+/* CRYPTO code needs this */
+void VISenterhalf(void);
+EXPORT_SYMBOL(VISenterhalf);
+
extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
unsigned long *);
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a323805..167c856 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -433,6 +433,15 @@ config CRYPTO_SHA1_SSSE3
using Supplemental SSE3 (SSSE3) instructions or Advanced Vector
Extensions (AVX), when available.
+config CRYPTO_SHA1_SPARC64
+ tristate "SHA1 digest algorithm (SPARC64)"
+ depends on SPARC64
+ select CRYPTO_SHA1
+ select CRYPTO_HASH
+ help
+ SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
+ using sparc64 crypto instructions, when available.
+
config CRYPTO_SHA256
tristate "SHA224 and SHA256 digest algorithm"
select CRYPTO_HASH
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
