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crypto: talitos - using helpers for all talitos_ptr operations 

Use helper for all modifications to talitos_ptr in preparation to
the implementation of AEAD for SEC1

to_talitos_ptr_extent_clear() has been removed in favor of
to_talitos_ptr_ext_set() to set any value and
to_talitos_ptr_ext_or() to or the extent field with a value
name has been shorten to help keeping single lines of 80 chars

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LEROY Christophe 2016-06-06 13:20:34 +02:00 committed by Herbert Xu
parent 63dac35b58
commit b096b544d6
1 changed files with 34 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/crypto/talitos.c
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@ -91,10 +91,17 @@ static unsigned short from_talitos_ptr_len(struct talitos_ptr *ptr,
return be16_to_cpu(ptr->len);
}
static void to_talitos_ptr_extent_clear(struct talitos_ptr *ptr, bool is_sec1)
static void to_talitos_ptr_ext_set(struct talitos_ptr *ptr, u8 val,
bool is_sec1)
{
if (!is_sec1)
ptr->j_extent = 0;
ptr->j_extent = val;
}
static void to_talitos_ptr_ext_or(struct talitos_ptr *ptr, u8 val, bool is_sec1)
{
if (!is_sec1)
ptr->j_extent |= val;
}
/*
@ -111,7 +118,7 @@ static void map_single_talitos_ptr(struct device *dev,
to_talitos_ptr_len(ptr, len, is_sec1);
to_talitos_ptr(ptr, dma_addr, is_sec1);
to_talitos_ptr_extent_clear(ptr, is_sec1);
to_talitos_ptr_ext_set(ptr, 0, is_sec1);
}
/*
@ -1050,8 +1057,8 @@ static int sg_to_link_tbl_offset(struct scatterlist *sg, int sg_count,
to_talitos_ptr(link_tbl_ptr + count,
sg_dma_address(sg) + offset, 0);
link_tbl_ptr[count].len = cpu_to_be16(len);
link_tbl_ptr[count].j_extent = 0;
to_talitos_ptr_len(link_tbl_ptr + count, len, 0);
to_talitos_ptr_ext_set(link_tbl_ptr + count, 0, 0);
count++;
cryptlen -= len;
offset = 0;
@ -1062,7 +1069,8 @@ next:
/* tag end of link table */
if (count > 0)
link_tbl_ptr[count - 1].j_extent = DESC_PTR_LNKTBL_RETURN;
to_talitos_ptr_ext_set(link_tbl_ptr + count - 1,
DESC_PTR_LNKTBL_RETURN, 0);
return count;
}
@ -1102,14 +1110,14 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
(areq->src == areq->dst) ? DMA_BIDIRECTIONAL
: DMA_TO_DEVICE);
/* hmac data */
desc->ptr[1].len = cpu_to_be16(areq->assoclen);
to_talitos_ptr_len(&desc->ptr[1], areq->assoclen, 0);
if (sg_count > 1 &&
(ret = sg_to_link_tbl_offset(areq->src, sg_count, 0,
areq->assoclen,
&edesc->link_tbl[tbl_off])) > 1) {
to_talitos_ptr(&desc->ptr[1], edesc->dma_link_tbl + tbl_off *
sizeof(struct talitos_ptr), 0);
desc->ptr[1].j_extent = DESC_PTR_LNKTBL_JUMP;
to_talitos_ptr_ext_set(&desc->ptr[1], DESC_PTR_LNKTBL_JUMP, 0);
dma_sync_single_for_device(dev, edesc->dma_link_tbl,
edesc->dma_len, DMA_BIDIRECTIONAL);
@ -1117,13 +1125,13 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
tbl_off += ret;
} else {
to_talitos_ptr(&desc->ptr[1], sg_dma_address(areq->src), 0);
desc->ptr[1].j_extent = 0;
to_talitos_ptr_ext_set(&desc->ptr[1], 0, 0);
}
/* cipher iv */
to_talitos_ptr(&desc->ptr[2], edesc->iv_dma, 0);
desc->ptr[2].len = cpu_to_be16(ivsize);
desc->ptr[2].j_extent = 0;
to_talitos_ptr_len(&desc->ptr[2], ivsize, 0);
to_talitos_ptr_ext_set(&desc->ptr[2], 0, 0);
/* cipher key */
map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen,
@ -1136,8 +1144,8 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
* extent is bytes of HMAC postpended to ciphertext,
* typically 12 for ipsec
*/
desc->ptr[4].len = cpu_to_be16(cryptlen);
desc->ptr[4].j_extent = authsize;
to_talitos_ptr_len(&desc->ptr[4], cryptlen, 0);
to_talitos_ptr_ext_set(&desc->ptr[4], authsize, 0);
sg_link_tbl_len = cryptlen;
if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV)
@ -1150,7 +1158,7 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
areq->assoclen, sg_link_tbl_len,
&edesc->link_tbl[tbl_off])) >
1) {
desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP;
to_talitos_ptr_ext_or(&desc->ptr[4], DESC_PTR_LNKTBL_JUMP, 0);
to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl +
tbl_off *
sizeof(struct talitos_ptr), 0);
@ -1163,8 +1171,8 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
}
/* cipher out */
desc->ptr[5].len = cpu_to_be16(cryptlen);
desc->ptr[5].j_extent = authsize;
to_talitos_ptr_len(&desc->ptr[5], cryptlen, 0);
to_talitos_ptr_ext_set(&desc->ptr[5], authsize, 0);
if (areq->src != areq->dst)
sg_count = dma_map_sg(dev, areq->dst, edesc->dst_nents ? : 1,
@ -1186,17 +1194,17 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
/* Add an entry to the link table for ICV data */
tbl_ptr += sg_count - 1;
tbl_ptr->j_extent = 0;
to_talitos_ptr_ext_set(tbl_ptr, 0, 0);
tbl_ptr++;
tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
tbl_ptr->len = cpu_to_be16(authsize);
to_talitos_ptr_ext_set(tbl_ptr, DESC_PTR_LNKTBL_RETURN, 0);
to_talitos_ptr_len(tbl_ptr, authsize, 0);
/* icv data follows link tables */
to_talitos_ptr(tbl_ptr, edesc->dma_link_tbl +
(edesc->src_nents + edesc->dst_nents +
2) * sizeof(struct talitos_ptr) +
authsize, 0);
desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP;
to_talitos_ptr_ext_or(&desc->ptr[5], DESC_PTR_LNKTBL_JUMP, 0);
dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl,
edesc->dma_len, DMA_BIDIRECTIONAL);
@ -1493,7 +1501,7 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src,
len, DMA_TO_DEVICE);
}
} else {
to_talitos_ptr_extent_clear(ptr, is_sec1);
to_talitos_ptr_ext_set(ptr, 0, is_sec1);
sg_count = dma_map_sg(dev, src, edesc->src_nents ? : 1, dir);
@ -1504,7 +1512,8 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src,
&edesc->link_tbl[0]);
if (sg_count > 1) {
to_talitos_ptr(ptr, edesc->dma_link_tbl, 0);
ptr->j_extent |= DESC_PTR_LNKTBL_JUMP;
to_talitos_ptr_ext_or(ptr, DESC_PTR_LNKTBL_JUMP,
0);
dma_sync_single_for_device(dev,
edesc->dma_link_tbl,
edesc->dma_len,
@ -1544,7 +1553,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst,
len, DMA_FROM_DEVICE);
}
} else {
to_talitos_ptr_extent_clear(ptr, is_sec1);
to_talitos_ptr_ext_set(ptr, 0, is_sec1);
if (sg_count == 1) {
to_talitos_ptr(ptr, sg_dma_address(dst), is_sec1);
@ -1555,7 +1564,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst,
to_talitos_ptr(ptr, edesc->dma_link_tbl +
(edesc->src_nents + 1) *
sizeof(struct talitos_ptr), 0);
ptr->j_extent |= DESC_PTR_LNKTBL_JUMP;
to_talitos_ptr_ext_or(ptr, DESC_PTR_LNKTBL_JUMP, 0);
sg_to_link_tbl(dst, sg_count, len, link_tbl_ptr);
dma_sync_single_for_device(dev, edesc->dma_link_tbl,
edesc->dma_len,
@ -1586,7 +1595,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc,
/* cipher iv */
to_talitos_ptr(&desc->ptr[1], edesc->iv_dma, is_sec1);
to_talitos_ptr_len(&desc->ptr[1], ivsize, is_sec1);
to_talitos_ptr_extent_clear(&desc->ptr[1], is_sec1);
to_talitos_ptr_ext_set(&desc->ptr[1], 0, is_sec1);
/* cipher key */
map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen,