ltq-deu: make deu hash lock global and remove md5_hmac_ exports

All hash algorithms use the same base IFX_HASH_CON to access the hash unit.
Parallel threads should not be able to call different hash algorithms and
therefor a global lock is required.
Fixed linker warning, that md5_hmac_init, md5_hmac_update and
md5_hmac_final are static export symbols. The export symbols are not
required, because the functions are exposed using shash_alg structure.

Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>

6 files changed, 23 insertions, 48 deletions

diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.c
index 3947b31a40..a102568f97 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.c
@@ -69,6 +69,8 @@
 #endif /* CONFIG_xxxx */
 
 int disable_deudma = 1;
+spinlock_t ltq_deu_hash_lock;
+EXPORT_SYMBOL_GPL(ltq_deu_hash_lock);
 
 void chip_version(void);
 
@@ -84,6 +86,7 @@ static int ltq_deu_probe(struct platform_device *pdev)
 
 
     START_DEU_POWER;
+    CRTCL_SECT_HASH_INIT;
     
 #define IFX_DEU_DRV_VERSION         "2.0.0"
          printk(KERN_INFO "Infineon Technologies DEU driver version %s \n", IFX_DEU_DRV_VERSION);
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.h b/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.h
index 8045c2081a..3c994cb346 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.h
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_deu.h
@@ -131,6 +131,10 @@ void __exit lqdeu_fini_async_des(void);
 void __exit deu_fini (void);
 int deu_dma_init (void);
 
+extern spinlock_t ltq_deu_hash_lock;
+#define CRTCL_SECT_HASH_INIT        spin_lock_init(&ltq_deu_hash_lock)
+#define CRTCL_SECT_HASH_START       spin_lock_irqsave(&ltq_deu_hash_lock, flag)
+#define CRTCL_SECT_HASH_END         spin_unlock_irqrestore(&ltq_deu_hash_lock, flag)
 
 
 #define DEU_WAKELIST_INIT(queue) \
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5.c
index 14967c30d6..f7dbee4fdc 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5.c
@@ -64,11 +64,6 @@
 #define MD5_HASH_WORDS      4
 #define HASH_START   IFX_HASH_CON
 
-static spinlock_t lock;
-#define CRTCL_SECT_INIT        spin_lock_init(&lock)
-#define CRTCL_SECT_START       spin_lock_irqsave(&lock, flag)
-#define CRTCL_SECT_END         spin_unlock_irqrestore(&lock, flag)
-
 //#define CRYPTO_DEBUG
 #ifdef CRYPTO_DEBUG
 extern char debug_level;
@@ -110,7 +105,7 @@ static void md5_transform(struct md5_ctx *mctx, u32 *hash, u32 const *in)
     volatile struct deu_hash_t *hashs = (struct deu_hash_t *) HASH_START;
     unsigned long flag;
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
 
     if (mctx->started) { 
         hashs->D1R = endian_swap(*((u32 *) hash + 0));
@@ -136,7 +131,7 @@ static void md5_transform(struct md5_ctx *mctx, u32 *hash, u32 const *in)
 
     mctx->started = 1; 
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 }
 
 /*! \fn static inline void md5_transform_helper(struct md5_ctx *ctx)
@@ -242,14 +237,14 @@ static int md5_final(struct shash_desc *desc, u8 *out)
 
     md5_transform(mctx, mctx->hash, mctx->block);                                                 
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
 
     *((u32 *) out + 0) = endian_swap (hashs->D1R);
     *((u32 *) out + 1) = endian_swap (hashs->D2R);
     *((u32 *) out + 2) = endian_swap (hashs->D3R);
     *((u32 *) out + 3) = endian_swap (hashs->D4R);
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 
     // Wipe context
     memset(mctx, 0, sizeof(*mctx));
@@ -288,8 +283,6 @@ int ifxdeu_init_md5 (void)
     if ((ret = crypto_register_shash(&ifxdeu_md5_alg)))
         goto md5_err;
 
-    CRTCL_SECT_INIT;
-
     printk (KERN_NOTICE "IFX DEU MD5 initialized%s.\n", disable_deudma ? "" : " (DMA)");
     return ret;
 
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
index b6e65c8b22..9cc6eb7a55 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
@@ -63,11 +63,6 @@
 #define MD5_HMAC_DBN_TEMP_SIZE  1024 // size in dword, needed for dbn workaround 
 #define HASH_START   IFX_HASH_CON
 
-static spinlock_t lock;
-#define CRTCL_SECT_INIT        spin_lock_init(&lock)
-#define CRTCL_SECT_START       spin_lock_irqsave(&lock, flag)
-#define CRTCL_SECT_END         spin_unlock_irqrestore(&lock, flag)
-
 //#define CRYPTO_DEBUG
 #ifdef CRYPTO_DEBUG
 extern char debug_level;
@@ -167,7 +162,7 @@ static int md5_hmac_setkey_hw(const u8 *key, unsigned int keylen)
 
     //printk("\nsetkey keylen: %d\n key: ", keylen);
     
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
     j = 0;
     for (i = 0; i < keylen; i+=4)
     {
@@ -177,7 +172,7 @@ static int md5_hmac_setkey_hw(const u8 *key, unsigned int keylen)
          asm("sync");
          j++;
     }
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 
     return 0;
 }
@@ -198,7 +193,6 @@ static int md5_hmac_init(struct shash_desc *desc)
 
     return 0;
 }
-EXPORT_SYMBOL(md5_hmac_init);
     
 /*! \fn void md5_hmac_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
  *  \ingroup IFX_MD5_HMAC_FUNCTIONS
@@ -237,7 +231,6 @@ static int md5_hmac_update(struct shash_desc *desc, const u8 *data, unsigned int
     memcpy(mctx->block, data, len);
     return 0;    
 }
-EXPORT_SYMBOL(md5_hmac_update);
 
 /*! \fn void md5_hmac_final(struct crypto_tfm *tfm, u8 *out)
  *  \ingroup IFX_MD5_HMAC_FUNCTIONS
@@ -272,7 +265,7 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
 
     md5_hmac_transform(desc, mctx->block);
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
 
     //printk("\ndbn = %d\n", mctx->dbn); 
     hashs->DBN = mctx->dbn;
@@ -322,14 +315,12 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
     memset(&mctx->block[0], 0, sizeof(MD5_BLOCK_WORDS));
     memset(&temp[0], 0, MD5_HMAC_DBN_TEMP_SIZE);
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 
 
    return 0;
 }
 
-EXPORT_SYMBOL(md5_hmac_final);
-
 /* 
  * \brief MD5_HMAC function mappings
 */
@@ -365,8 +356,6 @@ int ifxdeu_init_md5_hmac (void)
     if ((ret = crypto_register_shash(&ifxdeu_md5_hmac_alg)))
         goto md5_hmac_err;
 
-    CRTCL_SECT_INIT;
-
     printk (KERN_NOTICE "IFX DEU MD5_HMAC initialized%s.\n", disable_deudma ? "" : " (DMA)");
     return ret;
 
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1.c
index 362fe89c92..70271b2dd0 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1.c
@@ -65,11 +65,6 @@
 #define SHA1_HMAC_BLOCK_SIZE    64
 #define HASH_START   IFX_HASH_CON
 
-static spinlock_t lock;
-#define CRTCL_SECT_INIT        spin_lock_init(&lock)
-#define CRTCL_SECT_START       spin_lock_irqsave(&lock, flag)
-#define CRTCL_SECT_END         spin_unlock_irqrestore(&lock, flag)
-
 //#define CRYPTO_DEBUG
 #ifdef CRYPTO_DEBUG
 extern char debug_level;
@@ -104,7 +99,7 @@ static void sha1_transform1 (struct sha1_ctx *sctx, u32 *state, const u32 *in)
     volatile struct deu_hash_t *hashs = (struct deu_hash_t *) HASH_START;
     unsigned long flag;
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
 
     /* For context switching purposes, the previous hash output
      * is loaded back into the output register 
@@ -137,7 +132,7 @@ static void sha1_transform1 (struct sha1_ctx *sctx, u32 *state, const u32 *in)
 
     sctx->started = 1;
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 }
 
 /*! \fn static void sha1_init1(struct crypto_tfm *tfm)
@@ -229,7 +224,7 @@ static int sha1_final(struct shash_desc *desc, u8 *out)
     /* Append length */
     sha1_update (desc, bits, sizeof bits);
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
 
     *((u32 *) out + 0) = hashs->D1R;
     *((u32 *) out + 1) = hashs->D2R;
@@ -237,7 +232,7 @@ static int sha1_final(struct shash_desc *desc, u8 *out)
     *((u32 *) out + 3) = hashs->D4R;
     *((u32 *) out + 4) = hashs->D5R;
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 
     // Wipe context
     memset (sctx, 0, sizeof *sctx);
@@ -278,8 +273,6 @@ int ifxdeu_init_sha1 (void)
     if ((ret = crypto_register_shash(&ifxdeu_sha1_alg)))
         goto sha1_err;
 
-    CRTCL_SECT_INIT;
-
     printk (KERN_NOTICE "IFX DEU SHA1 initialized%s.\n", disable_deudma ? "" : " (DMA)");
     return ret;
 
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1_hmac.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1_hmac.c
index 09496c509b..a1461e6e5b 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1_hmac.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_sha1_hmac.c
@@ -66,11 +66,6 @@
 
 #define SHA1_HMAC_MAX_KEYLEN 64
 
-static spinlock_t lock;
-#define CRTCL_SECT_INIT        spin_lock_init(&lock)
-#define CRTCL_SECT_START       spin_lock_irqsave(&lock, flag)
-#define CRTCL_SECT_END         spin_unlock_irqrestore(&lock, flag)
-
 #ifdef CRYPTO_DEBUG
 extern char debug_level;
 #define DPRINTF(level, format, args...) if (level < debug_level) printk(KERN_INFO "[%s %s %d]: " format, __FILE__, __func__, __LINE__, ##args);
@@ -158,7 +153,7 @@ static int sha1_hmac_setkey_hw(const u8 *key, unsigned int keylen)
 
     j = 0;
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
     for (i = 0; i < keylen; i+=4)
     {
          hash->KIDX = j;
@@ -167,7 +162,7 @@ static int sha1_hmac_setkey_hw(const u8 *key, unsigned int keylen)
          j++;
     }
 
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
     return 0;
 }
 
@@ -265,7 +260,7 @@ static int sha1_hmac_final(struct shash_desc *desc, u8 *out)
     /* Append length */
     sha1_hmac_update (desc, bits, sizeof bits);
 
-    CRTCL_SECT_START;
+    CRTCL_SECT_HASH_START;
     
     hashs->DBN = sctx->dbn;
     
@@ -312,7 +307,7 @@ static int sha1_hmac_final(struct shash_desc *desc, u8 *out)
     sctx->count = 0; 
  
     //printk("debug ln: %d, fn: %s\n", __LINE__, __func__);
-    CRTCL_SECT_END;
+    CRTCL_SECT_HASH_END;
 
 
     return 0;
@@ -355,8 +350,6 @@ int ifxdeu_init_sha1_hmac (void)
     if ((ret = crypto_register_shash(&ifxdeu_sha1_hmac_alg)))
         goto sha1_err;
 
-    CRTCL_SECT_INIT;
-
     printk (KERN_NOTICE "IFX DEU SHA1_HMAC initialized%s.\n", disable_deudma ? "" : " (DMA)");
     return ret;