crypto: crypto4xx - Switch to new style ahash

This patch changes crypto4xx to use the new style ahash type.
In particular, we now use ahash_alg to define ahash algorithms
instead of crypto_alg.

This is achieved by introducing a union that encapsulates the
new type and the existing crypto_alg structure.  They're told
apart through a u32 field containing the type value.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

3 files changed, 77 insertions, 39 deletions

diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c
index cb7be4283aa0..857e35efedac 100644
--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -31,8 +31,6 @@
 #include <asm/dcr.h>
 #include <asm/dcr-regs.h>
 #include <asm/cacheflush.h>
-#include <crypto/internal/hash.h>
-#include <crypto/algapi.h>
 #include <crypto/aes.h>
 #include <crypto/sha.h>
 #include "crypto4xx_reg_def.h"
@@ -998,11 +996,15 @@ static int crypto4xx_alg_init(struct crypto_tfm *tfm)
         ctx->sa_out_dma_addr = 0;
         ctx->sa_len = 0;
 
-        if (alg->cra_type == &crypto_ablkcipher_type)
+        switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
+        default:
                 tfm->crt_ablkcipher.reqsize = sizeof(struct crypto4xx_ctx);
-        else if (alg->cra_type == &crypto_ahash_type)
+                break;
+        case CRYPTO_ALG_TYPE_AHASH:
                 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
                                          sizeof(struct crypto4xx_ctx));
+                break;
+        }
 
         return 0;
 }
@@ -1016,7 +1018,8 @@ static void crypto4xx_alg_exit(struct crypto_tfm *tfm)
 }
 
 int crypto4xx_register_alg(struct crypto4xx_device *sec_dev,
-                           struct crypto_alg *crypto_alg, int array_size)
+                           struct crypto4xx_alg_common *crypto_alg,
+                           int array_size)
 {
         struct crypto4xx_alg *alg;
         int i;
@@ -1028,13 +1031,18 @@ int crypto4xx_register_alg(struct crypto4xx_device *sec_dev,
                         return -ENOMEM;
 
                 alg->alg = crypto_alg[i];
-                INIT_LIST_HEAD(&alg->alg.cra_list);
-                if (alg->alg.cra_init == NULL)
-                        alg->alg.cra_init = crypto4xx_alg_init;
-                if (alg->alg.cra_exit == NULL)
-                        alg->alg.cra_exit = crypto4xx_alg_exit;
                 alg->dev = sec_dev;
-                rc = crypto_register_alg(&alg->alg);
+
+                switch (alg->alg.type) {
+                case CRYPTO_ALG_TYPE_AHASH:
+                        rc = crypto_register_ahash(&alg->alg.u.hash);
+                        break;
+
+                default:
+                        rc = crypto_register_alg(&alg->alg.u.cipher);
+                        break;
+                }
+
                 if (rc) {
                         list_del(&alg->entry);
                         kfree(alg);
@@ -1052,7 +1060,14 @@ static void crypto4xx_unregister_alg(struct crypto4xx_device *sec_dev)
 
         list_for_each_entry_safe(alg, tmp, &sec_dev->alg_list, entry) {
                 list_del(&alg->entry);
-                crypto_unregister_alg(&alg->alg);
+                switch (alg->alg.type) {
+                case CRYPTO_ALG_TYPE_AHASH:
+                        crypto_unregister_ahash(&alg->alg.u.hash);
+                        break;
+
+                default:
+                        crypto_unregister_alg(&alg->alg.u.cipher);
+                }
                 kfree(alg);
         }
 }
@@ -1105,17 +1120,18 @@ static irqreturn_t crypto4xx_ce_interrupt_handler(int irq, void *data)
 /**
  * Supported Crypto Algorithms
  */
-struct crypto_alg crypto4xx_alg[] = {
+struct crypto4xx_alg_common crypto4xx_alg[] = {
         /* Crypto AES modes */
-        {
+        { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, .u.cipher = {
                 .cra_name       = "cbc(aes)",
                 .cra_driver_name = "cbc-aes-ppc4xx",
                 .cra_priority   = CRYPTO4XX_CRYPTO_PRIORITY,
                 .cra_flags      = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
                 .cra_blocksize  = AES_BLOCK_SIZE,
                 .cra_ctxsize    = sizeof(struct crypto4xx_ctx),
-                .cra_alignmask  = 0,
                 .cra_type       = &crypto_ablkcipher_type,
+                .cra_init       = crypto4xx_alg_init,
+                .cra_exit       = crypto4xx_alg_exit,
                 .cra_module     = THIS_MODULE,
                 .cra_u          = {
                         .ablkcipher = {
@@ -1127,29 +1143,26 @@ struct crypto_alg crypto4xx_alg[] = {
                                 .decrypt        = crypto4xx_decrypt,
                         }
                 }
-        },
+        }},
         /* Hash SHA1 */
-        {
-                .cra_name       = "sha1",
-                .cra_driver_name = "sha1-ppc4xx",
-                .cra_priority   = CRYPTO4XX_CRYPTO_PRIORITY,
-                .cra_flags      = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC,
-                .cra_blocksize  = SHA1_BLOCK_SIZE,
-                .cra_ctxsize    = sizeof(struct crypto4xx_ctx),
-                .cra_alignmask  = 0,
-                .cra_type       = &crypto_ahash_type,
-                .cra_init       = crypto4xx_sha1_alg_init,
-                .cra_module     = THIS_MODULE,
-                .cra_u          = {
-                        .ahash = {
-                                .digestsize     = SHA1_DIGEST_SIZE,
-                                .init           = crypto4xx_hash_init,
-                                .update         = crypto4xx_hash_update,
-                                .final          = crypto4xx_hash_final,
-                                .digest         = crypto4xx_hash_digest,
-                        }
+        { .type = CRYPTO_ALG_TYPE_AHASH, .u.hash = {
+                .init           = crypto4xx_hash_init,
+                .update         = crypto4xx_hash_update,
+                .final          = crypto4xx_hash_final,
+                .digest         = crypto4xx_hash_digest,
+                .halg.digestsize = SHA1_DIGEST_SIZE,
+                .halg.base      = {
+                        .cra_name       = "sha1",
+                        .cra_driver_name = "sha1-ppc4xx",
+                        .cra_priority   = CRYPTO4XX_CRYPTO_PRIORITY,
+                        .cra_flags      = CRYPTO_ALG_ASYNC,
+                        .cra_blocksize  = SHA1_BLOCK_SIZE,
+                        .cra_ctxsize    = sizeof(struct crypto4xx_ctx),
+                        .cra_init       = crypto4xx_sha1_alg_init,
+                        .cra_exit       = crypto4xx_alg_exit,
+                        .cra_module     = THIS_MODULE,
                 }
-        },
+        }},
 };
 
 /**
diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h
index 1ef103449364..da9cbe3b9fc3 100644
--- a/drivers/crypto/amcc/crypto4xx_core.h
+++ b/drivers/crypto/amcc/crypto4xx_core.h
@@ -22,6 +22,8 @@
 #ifndef __CRYPTO4XX_CORE_H__
 #define __CRYPTO4XX_CORE_H__
 
+#include <crypto/internal/hash.h>
+
 #define PPC460SX_SDR0_SRST                      0x201
 #define PPC405EX_SDR0_SRST                      0x200
 #define PPC460EX_SDR0_SRST                      0x201
@@ -138,14 +140,31 @@ struct crypto4xx_req_ctx {
         u16 sa_len;
 };
 
+struct crypto4xx_alg_common {
+        u32 type;
+        union {
+                struct crypto_alg cipher;
+                struct ahash_alg hash;
+        } u;
+};
+
 struct crypto4xx_alg {
         struct list_head  entry;
-        struct crypto_alg alg;
+        struct crypto4xx_alg_common alg;
         struct crypto4xx_device *dev;
 };
 
-#define crypto_alg_to_crypto4xx_alg(x) \
-                container_of(x, struct crypto4xx_alg, alg)
+static inline struct crypto4xx_alg *crypto_alg_to_crypto4xx_alg(
+        struct crypto_alg *x)
+{
+        switch (x->cra_flags & CRYPTO_ALG_TYPE_MASK) {
+        case CRYPTO_ALG_TYPE_AHASH:
+                return container_of(__crypto_ahash_alg(x),
+                                    struct crypto4xx_alg, alg.u.hash);
+        }
+
+        return container_of(x, struct crypto4xx_alg, alg.u.cipher);
+}
 
 extern int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size);
 extern void crypto4xx_free_sa(struct crypto4xx_ctx *ctx);
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 9d30316e9f10..e3a82514d61e 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -103,6 +103,12 @@ static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
         return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
 }
 
+static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
+{
+        return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
+                            halg);
+}
+
 static inline struct old_ahash_alg *crypto_old_ahash_alg(
         struct crypto_ahash *tfm)
 {