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Subject[PATCH 13/18] crypto: talitos - remove to_talitos_ptr_len()
Date
to_talitos_ptr() and to_talitos_ptr_len() are always called together
in order to fully set a ptr, so lets merge them into a single
helper.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
drivers/crypto/talitos.c | 56 ++++++++++++++++++------------------------------
1 file changed, 21 insertions(+), 35 deletions(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index e7e1bada03df..7e96db75347a 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -56,28 +56,26 @@
#include "talitos.h"

static void to_talitos_ptr(struct talitos_ptr *ptr, dma_addr_t dma_addr,
- bool is_sec1)
+ unsigned int len, bool is_sec1)
{
ptr->ptr = cpu_to_be32(lower_32_bits(dma_addr));
- if (!is_sec1)
+ if (is_sec1) {
+ ptr->len1 = cpu_to_be16(len);
+ } else {
+ ptr->len = cpu_to_be16(len);
ptr->eptr = upper_32_bits(dma_addr);
+ }
}

static void copy_talitos_ptr(struct talitos_ptr *dst_ptr,
struct talitos_ptr *src_ptr, bool is_sec1)
{
dst_ptr->ptr = src_ptr->ptr;
- if (!is_sec1)
- dst_ptr->eptr = src_ptr->eptr;
-}
-
-static void to_talitos_ptr_len(struct talitos_ptr *ptr, unsigned int len,
- bool is_sec1)
-{
if (is_sec1) {
- ptr->len1 = cpu_to_be16(len);
+ dst_ptr->len1 = src_ptr->len1;
} else {
- ptr->len = cpu_to_be16(len);
+ dst_ptr->len = src_ptr->len;
+ dst_ptr->eptr = src_ptr->eptr;
}
}

@@ -115,8 +113,7 @@ static void map_single_talitos_ptr(struct device *dev,
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);

- to_talitos_ptr_len(ptr, len, is_sec1);
- to_talitos_ptr(ptr, dma_addr, is_sec1);
+ to_talitos_ptr(ptr, dma_addr, len, is_sec1);
}

/*
@@ -1090,8 +1087,7 @@ static int sg_to_link_tbl_offset(struct scatterlist *sg, int sg_count,
len = cryptlen;

to_talitos_ptr(link_tbl_ptr + count,
- sg_dma_address(sg) + offset, 0);
- to_talitos_ptr_len(link_tbl_ptr + count, len, 0);
+ sg_dma_address(sg) + offset, len, 0);
to_talitos_ptr_ext_set(link_tbl_ptr + count, 0, 0);
count++;
cryptlen -= len;
@@ -1117,14 +1113,12 @@ static int talitos_sg_map(struct device *dev, struct scatterlist *src,
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);

- to_talitos_ptr_len(ptr, len, is_sec1);
-
if (sg_count == 1) {
- to_talitos_ptr(ptr, sg_dma_address(src) + offset, is_sec1);
+ to_talitos_ptr(ptr, sg_dma_address(src) + offset, len, is_sec1);
return sg_count;
}
if (is_sec1) {
- to_talitos_ptr(ptr, edesc->dma_link_tbl + offset, is_sec1);
+ to_talitos_ptr(ptr, edesc->dma_link_tbl + offset, len, is_sec1);
return sg_count;
}
sg_count = sg_to_link_tbl_offset(src, sg_count, offset, len,
@@ -1135,7 +1129,7 @@ static int talitos_sg_map(struct device *dev, struct scatterlist *src,
return sg_count;
}
to_talitos_ptr(ptr, edesc->dma_link_tbl +
- tbl_off * sizeof(struct talitos_ptr), is_sec1);
+ tbl_off * sizeof(struct talitos_ptr), len, is_sec1);
to_talitos_ptr_ext_or(ptr, DESC_PTR_LNKTBL_JUMP, is_sec1);

return sg_count;
@@ -1186,13 +1180,10 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
}

/* cipher iv */
- if (desc->hdr & DESC_HDR_TYPE_IPSEC_ESP) {
- to_talitos_ptr(&desc->ptr[2], edesc->iv_dma, is_sec1);
- to_talitos_ptr_len(&desc->ptr[2], ivsize, is_sec1);
- } else {
- to_talitos_ptr(&desc->ptr[3], edesc->iv_dma, is_sec1);
- to_talitos_ptr_len(&desc->ptr[3], ivsize, is_sec1);
- }
+ if (desc->hdr & DESC_HDR_TYPE_IPSEC_ESP)
+ to_talitos_ptr(&desc->ptr[2], edesc->iv_dma, ivsize, is_sec1);
+ else
+ to_talitos_ptr(&desc->ptr[3], edesc->iv_dma, ivsize, is_sec1);

/* cipher key */
if (desc->hdr & DESC_HDR_TYPE_IPSEC_ESP)
@@ -1210,8 +1201,6 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
* extent is bytes of HMAC postpended to ciphertext,
* typically 12 for ipsec
*/
- to_talitos_ptr_len(&desc->ptr[4], cryptlen, is_sec1);
-
sg_link_tbl_len = cryptlen;

if (desc->hdr & DESC_HDR_TYPE_IPSEC_ESP) {
@@ -1257,11 +1246,10 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
to_talitos_ptr_ext_set(tbl_ptr - 1, 0, is_sec1);
to_talitos_ptr_ext_set(tbl_ptr, DESC_PTR_LNKTBL_RETURN,
is_sec1);
- to_talitos_ptr_len(tbl_ptr, authsize, is_sec1);

/* icv data follows link tables */
to_talitos_ptr(tbl_ptr, edesc->dma_link_tbl + offset,
- is_sec1);
+ authsize, is_sec1);
} else {
dma_addr_t addr = edesc->dma_link_tbl;

@@ -1270,8 +1258,7 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
else
addr += sizeof(struct talitos_ptr) * tbl_off;

- to_talitos_ptr(&desc->ptr[6], addr, is_sec1);
- to_talitos_ptr_len(&desc->ptr[6], authsize, is_sec1);
+ to_talitos_ptr(&desc->ptr[6], addr, authsize, is_sec1);
}
} else if (!(desc->hdr & DESC_HDR_TYPE_IPSEC_ESP)) {
ret = talitos_sg_map(dev, areq->dst, authsize, edesc,
@@ -1567,8 +1554,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc,
/* first DWORD empty */

/* 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(&desc->ptr[1], edesc->iv_dma, ivsize, is_sec1);

/* cipher key */
map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen,
--
2.13.3
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