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authorIuliana Prodan <iuliana.prodan@nxp.com>2019-02-08 16:50:07 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-02-15 08:21:55 +0300
commitba4cf71b6f1b0165f34888b17fe44f4235dd0132 (patch)
treeef2549c74e2095e13fcd085763df9a1f28ef3b14 /drivers/crypto/caam
parent920d7f7215d87005beb4aa2b90b9cb0b74b36947 (diff)
downloadlinux-ba4cf71b6f1b0165f34888b17fe44f4235dd0132.tar.xz
crypto: caam - use mapped_{src,dst}_nents for job descriptor
The mapped_{src,dst}_nents _returned_ from the dma_map_sg call (which could be less than src/dst_nents) have to be used to generate the aead, skcipher job descriptors. Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam')
-rw-r--r--drivers/crypto/caam/caamalg.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index a9ff2e19f9d5..6a52115f880a 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -802,6 +802,8 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
* aead_edesc - s/w-extended aead descriptor
* @src_nents: number of segments in input s/w scatterlist
* @dst_nents: number of segments in output s/w scatterlist
+ * @mapped_src_nents: number of segments in input h/w link table
+ * @mapped_dst_nents: number of segments in output h/w link table
* @sec4_sg_bytes: length of dma mapped sec4_sg space
* @sec4_sg_dma: bus physical mapped address of h/w link table
* @sec4_sg: pointer to h/w link table
@@ -810,6 +812,8 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
struct aead_edesc {
int src_nents;
int dst_nents;
+ int mapped_src_nents;
+ int mapped_dst_nents;
int sec4_sg_bytes;
dma_addr_t sec4_sg_dma;
struct sec4_sg_entry *sec4_sg;
@@ -820,6 +824,8 @@ struct aead_edesc {
* skcipher_edesc - s/w-extended skcipher descriptor
* @src_nents: number of segments in input s/w scatterlist
* @dst_nents: number of segments in output s/w scatterlist
+ * @mapped_src_nents: number of segments in input h/w link table
+ * @mapped_dst_nents: number of segments in output h/w link table
* @iv_dma: dma address of iv for checking continuity and link table
* @sec4_sg_bytes: length of dma mapped sec4_sg space
* @sec4_sg_dma: bus physical mapped address of h/w link table
@@ -830,6 +836,8 @@ struct aead_edesc {
struct skcipher_edesc {
int src_nents;
int dst_nents;
+ int mapped_src_nents;
+ int mapped_dst_nents;
dma_addr_t iv_dma;
int sec4_sg_bytes;
dma_addr_t sec4_sg_dma;
@@ -1024,11 +1032,12 @@ static void init_aead_job(struct aead_request *req,
init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE);
if (all_contig) {
- src_dma = edesc->src_nents ? sg_dma_address(req->src) : 0;
+ src_dma = edesc->mapped_src_nents ? sg_dma_address(req->src) :
+ 0;
in_options = 0;
} else {
src_dma = edesc->sec4_sg_dma;
- sec4_sg_index += edesc->src_nents;
+ sec4_sg_index += edesc->mapped_src_nents;
in_options = LDST_SGF;
}
@@ -1039,9 +1048,9 @@ static void init_aead_job(struct aead_request *req,
out_options = in_options;
if (unlikely(req->src != req->dst)) {
- if (!edesc->dst_nents) {
+ if (!edesc->mapped_dst_nents) {
dst_dma = 0;
- } else if (edesc->dst_nents == 1) {
+ } else if (edesc->mapped_dst_nents == 1) {
dst_dma = sg_dma_address(req->dst);
out_options = 0;
} else {
@@ -1214,11 +1223,11 @@ static void init_skcipher_job(struct skcipher_request *req,
dst_dma = edesc->sec4_sg_dma + sizeof(struct sec4_sg_entry);
out_options = LDST_SGF;
} else {
- if (edesc->dst_nents == 1) {
+ if (edesc->mapped_dst_nents == 1) {
dst_dma = sg_dma_address(req->dst);
} else {
- dst_dma = edesc->sec4_sg_dma + (edesc->src_nents + 1) *
- sizeof(struct sec4_sg_entry);
+ dst_dma = edesc->sec4_sg_dma + (edesc->mapped_src_nents
+ + 1) * sizeof(struct sec4_sg_entry);
out_options = LDST_SGF;
}
}
@@ -1324,6 +1333,8 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
edesc->src_nents = src_nents;
edesc->dst_nents = dst_nents;
+ edesc->mapped_src_nents = mapped_src_nents;
+ edesc->mapped_dst_nents = mapped_dst_nents;
edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) +
desc_bytes;
*all_contig_ptr = !(mapped_src_nents > 1);
@@ -1661,6 +1672,8 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req,
edesc->src_nents = src_nents;
edesc->dst_nents = dst_nents;
+ edesc->mapped_src_nents = mapped_src_nents;
+ edesc->mapped_dst_nents = mapped_dst_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (struct sec4_sg_entry *)((u8 *)edesc->hw_desc +
desc_bytes);