crypto: caam - change return code in caam_jr_enqueue function
Based on commit5.4-rM2-2.2.x-imx-squashed6b80ea389a
("crypto: change transient busy return code to -ENOSPC"), change the return code of caam_jr_enqueue function to -EINPROGRESS, in case of success, -ENOSPC in case the CAAM is busy (has no space left in job ring queue), -EIO if it cannot map the caller's descriptor. Update, also, the cases for resource-freeing for each algorithm type. This is done for later use, on backlogging support in CAAM. Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com> Reviewed-by: Horia Geanta <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit4d370a1036
) Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
parent
89c1a30bcb
commit
818937f545
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@ -1468,9 +1468,7 @@ static inline int chachapoly_crypt(struct aead_request *req, bool encrypt)
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1);
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ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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aead_unmap(jrdev, edesc, req);
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kfree(edesc);
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}
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@ -1513,9 +1511,7 @@ static inline int aead_crypt(struct aead_request *req, bool encrypt)
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desc = edesc->hw_desc;
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ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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aead_unmap(jrdev, edesc, req);
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kfree(edesc);
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}
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@ -1558,9 +1554,7 @@ static inline int gcm_crypt(struct aead_request *req, bool encrypt)
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desc = edesc->hw_desc;
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ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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aead_unmap(jrdev, edesc, req);
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kfree(edesc);
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}
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@ -1776,9 +1770,7 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt)
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desc = edesc->hw_desc;
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ret = caam_jr_enqueue(jrdev, desc, skcipher_crypt_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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skcipher_unmap(jrdev, edesc, req);
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kfree(edesc);
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}
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@ -422,7 +422,7 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, u32 *keylen, u8 *key,
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init_completion(&result.completion);
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ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
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if (!ret) {
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if (ret == -EINPROGRESS) {
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/* in progress */
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wait_for_completion(&result.completion);
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ret = result.err;
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@ -858,10 +858,8 @@ static int ahash_update_ctx(struct ahash_request *req)
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desc_bytes(desc), 1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req);
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if (ret)
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if (ret != -EINPROGRESS)
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goto unmap_ctx;
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ret = -EINPROGRESS;
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} else if (*next_buflen) {
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scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
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req->nbytes, 0);
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@ -936,10 +934,9 @@ static int ahash_final_ctx(struct ahash_request *req)
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1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
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if (ret)
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goto unmap_ctx;
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if (ret == -EINPROGRESS)
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return ret;
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return -EINPROGRESS;
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unmap_ctx:
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
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kfree(edesc);
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@ -1013,10 +1010,9 @@ static int ahash_finup_ctx(struct ahash_request *req)
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1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
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if (ret)
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goto unmap_ctx;
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if (ret == -EINPROGRESS)
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return ret;
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return -EINPROGRESS;
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unmap_ctx:
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
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kfree(edesc);
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@ -1086,9 +1082,7 @@ static int ahash_digest(struct ahash_request *req)
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1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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}
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@ -1138,9 +1132,7 @@ static int ahash_final_no_ctx(struct ahash_request *req)
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1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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}
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@ -1258,10 +1250,9 @@ static int ahash_update_no_ctx(struct ahash_request *req)
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desc_bytes(desc), 1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
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if (ret)
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if (ret != -EINPROGRESS)
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goto unmap_ctx;
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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@ -1353,9 +1344,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
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1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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if (ret != -EINPROGRESS) {
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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}
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@ -1452,10 +1441,9 @@ static int ahash_update_first(struct ahash_request *req)
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desc_bytes(desc), 1);
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
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if (ret)
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if (ret != -EINPROGRESS)
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goto unmap_ctx;
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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@ -634,8 +634,8 @@ static int caam_rsa_enc(struct akcipher_request *req)
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init_rsa_pub_desc(edesc->hw_desc, &edesc->pdb.pub);
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ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_pub_done, req);
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if (!ret)
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return -EINPROGRESS;
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if (ret == -EINPROGRESS)
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return ret;
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rsa_pub_unmap(jrdev, edesc, req);
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@ -667,8 +667,8 @@ static int caam_rsa_dec_priv_f1(struct akcipher_request *req)
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init_rsa_priv_f1_desc(edesc->hw_desc, &edesc->pdb.priv_f1);
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ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req);
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if (!ret)
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return -EINPROGRESS;
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if (ret == -EINPROGRESS)
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return ret;
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rsa_priv_f1_unmap(jrdev, edesc, req);
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@ -700,8 +700,8 @@ static int caam_rsa_dec_priv_f2(struct akcipher_request *req)
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init_rsa_priv_f2_desc(edesc->hw_desc, &edesc->pdb.priv_f2);
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ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req);
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if (!ret)
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return -EINPROGRESS;
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if (ret == -EINPROGRESS)
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return ret;
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rsa_priv_f2_unmap(jrdev, edesc, req);
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@ -733,8 +733,8 @@ static int caam_rsa_dec_priv_f3(struct akcipher_request *req)
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init_rsa_priv_f3_desc(edesc->hw_desc, &edesc->pdb.priv_f3);
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ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req);
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if (!ret)
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return -EINPROGRESS;
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if (ret == -EINPROGRESS)
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return ret;
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rsa_priv_f3_unmap(jrdev, edesc, req);
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@ -133,7 +133,7 @@ static inline int submit_job(struct caam_rng_ctx *ctx, int to_current)
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dev_dbg(jrdev, "submitting job %d\n", !(to_current ^ ctx->current_buf));
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init_completion(&bd->filled);
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err = caam_jr_enqueue(jrdev, desc, rng_done, ctx);
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if (err)
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if (err != -EINPROGRESS)
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complete(&bd->filled); /* don't wait on failed job*/
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else
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atomic_inc(&bd->empty); /* note if pending */
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@ -153,7 +153,7 @@ static int caam_read(struct hwrng *rng, void *data, size_t max, bool wait)
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if (atomic_read(&bd->empty) == BUF_EMPTY) {
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err = submit_job(ctx, 1);
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/* if can't submit job, can't even wait */
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if (err)
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if (err != -EINPROGRESS)
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return 0;
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}
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/* no immediate data, so exit if not waiting */
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@ -424,8 +424,8 @@ void caam_jr_free(struct device *rdev)
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EXPORT_SYMBOL(caam_jr_free);
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/**
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* caam_jr_enqueue() - Enqueue a job descriptor head. Returns 0 if OK,
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* -EBUSY if the queue is full, -EIO if it cannot map the caller's
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* caam_jr_enqueue() - Enqueue a job descriptor head. Returns -EINPROGRESS
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* if OK, -ENOSPC if the queue is full, -EIO if it cannot map the caller's
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* descriptor.
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* @dev: struct device of the job ring to be used
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* @desc: points to a job descriptor that execute our request. All
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@ -476,7 +476,7 @@ int caam_jr_enqueue(struct device *dev, u32 *desc,
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CIRC_SPACE(head, tail, JOBR_DEPTH) <= 0) {
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spin_unlock_bh(&jrp->inplock);
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dma_unmap_single(dev, desc_dma, desc_size, DMA_TO_DEVICE);
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return -EBUSY;
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return -ENOSPC;
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}
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head_entry = &jrp->entinfo[head];
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@ -521,7 +521,7 @@ int caam_jr_enqueue(struct device *dev, u32 *desc,
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spin_unlock_bh(&jrp->inplock);
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return 0;
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return -EINPROGRESS;
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}
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EXPORT_SYMBOL(caam_jr_enqueue);
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@ -108,7 +108,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
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init_completion(&result.completion);
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ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
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if (!ret) {
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if (ret == -EINPROGRESS) {
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/* in progress */
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wait_for_completion(&result.completion);
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ret = result.err;
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