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path: root/drivers/crypto/caam/caamhash.c
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Diffstat (limited to 'drivers/crypto/caam/caamhash.c')
-rw-r--r--drivers/crypto/caam/caamhash.c186
1 files changed, 149 insertions, 37 deletions
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index 0d9284ef96a8..b464d03ebf40 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -137,13 +137,20 @@ struct caam_hash_state {
/* Common job descriptor seq in/out ptr routines */
/* Map state->caam_ctx, and append seq_out_ptr command that points to it */
-static inline void map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,
- struct caam_hash_state *state,
- int ctx_len)
+static inline int map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,
+ struct caam_hash_state *state,
+ int ctx_len)
{
state->ctx_dma = dma_map_single(jrdev, state->caam_ctx,
ctx_len, DMA_FROM_DEVICE);
+ if (dma_mapping_error(jrdev, state->ctx_dma)) {
+ dev_err(jrdev, "unable to map ctx\n");
+ return -ENOMEM;
+ }
+
append_seq_out_ptr(desc, state->ctx_dma, ctx_len, 0);
+
+ return 0;
}
/* Map req->result, and append seq_out_ptr command that points to it */
@@ -201,14 +208,19 @@ try_buf_map_to_sec4_sg(struct device *jrdev, struct sec4_sg_entry *sec4_sg,
}
/* Map state->caam_ctx, and add it to link table */
-static inline void ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev,
- struct caam_hash_state *state,
- int ctx_len,
- struct sec4_sg_entry *sec4_sg,
- u32 flag)
+static inline int ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev,
+ struct caam_hash_state *state, int ctx_len,
+ struct sec4_sg_entry *sec4_sg, u32 flag)
{
state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag);
+ if (dma_mapping_error(jrdev, state->ctx_dma)) {
+ dev_err(jrdev, "unable to map ctx\n");
+ return -ENOMEM;
+ }
+
dma_to_sec4_sg_one(sec4_sg, state->ctx_dma, ctx_len, 0);
+
+ return 0;
}
/* Common shared descriptor commands */
@@ -487,11 +499,11 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
digestsize, 1);
#endif
}
- *keylen = digestsize;
-
dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE);
dma_unmap_single(jrdev, dst_dma, digestsize, DMA_FROM_DEVICE);
+ *keylen = digestsize;
+
kfree(desc);
return ret;
@@ -706,7 +718,7 @@ static void ahash_done_ctx_src(struct device *jrdev, u32 *desc, u32 err,
if (err)
caam_jr_strstatus(jrdev, err);
- ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
+ ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_TO_DEVICE);
kfree(edesc);
#ifdef DEBUG
@@ -741,7 +753,7 @@ static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
if (err)
caam_jr_strstatus(jrdev, err);
- ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
+ ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_FROM_DEVICE);
kfree(edesc);
#ifdef DEBUG
@@ -808,12 +820,11 @@ static int ahash_update_ctx(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes,
- DMA_TO_DEVICE);
- ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
- edesc->sec4_sg, DMA_BIDIRECTIONAL);
+ ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
+ edesc->sec4_sg, DMA_BIDIRECTIONAL);
+ if (ret)
+ return ret;
state->buf_dma = try_buf_map_to_sec4_sg(jrdev,
edesc->sec4_sg + 1,
@@ -839,6 +850,14 @@ static int ahash_update_ctx(struct ahash_request *req)
init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER |
HDR_REVERSE);
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
+
append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
to_hash, LDST_SGF);
@@ -911,23 +930,34 @@ static int ahash_final_ctx(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes, DMA_TO_DEVICE);
edesc->src_nents = 0;
- ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg,
- DMA_TO_DEVICE);
+ ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
+ edesc->sec4_sg, DMA_TO_DEVICE);
+ if (ret)
+ return ret;
state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
buf, state->buf_dma, buflen,
last_buflen);
(edesc->sec4_sg + sec4_sg_bytes - 1)->len |= SEC4_SG_LEN_FIN;
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
+
append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,
LDST_SGF);
edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
digestsize);
+ if (dma_mapping_error(jrdev, edesc->dst_dma)) {
+ dev_err(jrdev, "unable to map dst\n");
+ return -ENOMEM;
+ }
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -989,11 +1019,11 @@ static int ahash_finup_ctx(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes, DMA_TO_DEVICE);
- ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg,
- DMA_TO_DEVICE);
+ ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
+ edesc->sec4_sg, DMA_TO_DEVICE);
+ if (ret)
+ return ret;
state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
buf, state->buf_dma, buflen,
@@ -1002,11 +1032,22 @@ static int ahash_finup_ctx(struct ahash_request *req)
src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg +
sec4_sg_src_index, chained);
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
+
append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
buflen + req->nbytes, LDST_SGF);
edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
digestsize);
+ if (dma_mapping_error(jrdev, edesc->dst_dma)) {
+ dev_err(jrdev, "unable to map dst\n");
+ return -ENOMEM;
+ }
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1056,8 +1097,7 @@ static int ahash_digest(struct ahash_request *req)
}
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes, DMA_TO_DEVICE);
+ edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->src_nents = src_nents;
edesc->chained = chained;
@@ -1067,6 +1107,12 @@ static int ahash_digest(struct ahash_request *req)
if (src_nents) {
sg_to_sec4_sg_last(req->src, src_nents, edesc->sec4_sg, 0);
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
src_dma = edesc->sec4_sg_dma;
options = LDST_SGF;
} else {
@@ -1077,6 +1123,10 @@ static int ahash_digest(struct ahash_request *req)
edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
digestsize);
+ if (dma_mapping_error(jrdev, edesc->dst_dma)) {
+ dev_err(jrdev, "unable to map dst\n");
+ return -ENOMEM;
+ }
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1125,11 +1175,19 @@ static int ahash_final_no_ctx(struct ahash_request *req)
init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE);
state->buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, state->buf_dma)) {
+ dev_err(jrdev, "unable to map src\n");
+ return -ENOMEM;
+ }
append_seq_in_ptr(desc, state->buf_dma, buflen, 0);
edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
digestsize);
+ if (dma_mapping_error(jrdev, edesc->dst_dma)) {
+ dev_err(jrdev, "unable to map dst\n");
+ return -ENOMEM;
+ }
edesc->src_nents = 0;
#ifdef DEBUG
@@ -1197,9 +1255,7 @@ static int ahash_update_no_ctx(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes,
- DMA_TO_DEVICE);
+ edesc->dst_dma = 0;
state->buf_dma = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg,
buf, *buflen);
@@ -1216,9 +1272,19 @@ static int ahash_update_no_ctx(struct ahash_request *req)
init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER |
HDR_REVERSE);
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
+
append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);
- map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
+ ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
+ if (ret)
+ return ret;
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1297,8 +1363,6 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes, DMA_TO_DEVICE);
state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf,
state->buf_dma, buflen,
@@ -1307,11 +1371,22 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg + 1,
chained);
+ edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
+ sec4_sg_bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
+
append_seq_in_ptr(desc, edesc->sec4_sg_dma, buflen +
req->nbytes, LDST_SGF);
edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
digestsize);
+ if (dma_mapping_error(jrdev, edesc->dst_dma)) {
+ dev_err(jrdev, "unable to map dst\n");
+ return -ENOMEM;
+ }
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1380,13 +1455,19 @@ static int ahash_update_first(struct ahash_request *req)
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +
DESC_JOB_IO_LEN;
- edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
- sec4_sg_bytes,
- DMA_TO_DEVICE);
+ edesc->dst_dma = 0;
if (src_nents) {
sg_to_sec4_sg_last(req->src, src_nents,
edesc->sec4_sg, 0);
+ edesc->sec4_sg_dma = dma_map_single(jrdev,
+ edesc->sec4_sg,
+ sec4_sg_bytes,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
+ dev_err(jrdev, "unable to map S/G table\n");
+ return -ENOMEM;
+ }
src_dma = edesc->sec4_sg_dma;
options = LDST_SGF;
} else {
@@ -1404,7 +1485,9 @@ static int ahash_update_first(struct ahash_request *req)
append_seq_in_ptr(desc, src_dma, to_hash, options);
- map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
+ ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
+ if (ret)
+ return ret;
#ifdef DEBUG
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1453,6 +1536,7 @@ static int ahash_init(struct ahash_request *req)
state->final = ahash_final_no_ctx;
state->current_buf = 0;
+ state->buf_dma = 0;
return 0;
}
@@ -1787,8 +1871,36 @@ caam_hash_alloc(struct caam_hash_template *template,
static int __init caam_algapi_hash_init(void)
{
+ struct device_node *dev_node;
+ struct platform_device *pdev;
+ struct device *ctrldev;
+ void *priv;
int i = 0, err = 0;
+ dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
+ if (!dev_node) {
+ dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
+ if (!dev_node)
+ return -ENODEV;
+ }
+
+ pdev = of_find_device_by_node(dev_node);
+ if (!pdev) {
+ of_node_put(dev_node);
+ return -ENODEV;
+ }
+
+ ctrldev = &pdev->dev;
+ priv = dev_get_drvdata(ctrldev);
+ of_node_put(dev_node);
+
+ /*
+ * If priv is NULL, it's probably because the caam driver wasn't
+ * properly initialized (e.g. RNG4 init failed). Thus, bail out here.
+ */
+ if (!priv)
+ return -ENODEV;
+
INIT_LIST_HEAD(&hash_list);
/* register crypto algorithms the device supports */
generated by cgit (git 2.34.1) at 2024-06-10 04:21:26 +0000