[PATCH] crypto: sun4i-ss: fix big endian issues

From: Corentin Labbe
Date: Thu Nov 14 2019 - 07:58:59 EST


When testing BigEndian kernel, the sun4i-ss was failling all crypto
tests.
This patch fix endian issues with it.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: Corentin Labbe <clabbe.montjoie@xxxxxxxxx>
---
.../crypto/allwinner/sun4i-ss/sun4i-ss-hash.c | 21 ++++++++++---------
1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
index ec5d9ce24bb8..b233f67f491f 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
@@ -187,7 +187,7 @@ static int sun4i_hash(struct ahash_request *areq)
*/
unsigned int i = 0, end, fill, min_fill, nwait, nbw = 0, j = 0, todo;
unsigned int in_i = 0;
- u32 spaces, rx_cnt = SS_RX_DEFAULT, bf[32] = {0}, wb = 0, v, ivmode = 0;
+ u32 spaces, rx_cnt = SS_RX_DEFAULT, bf[32] = {0}, v, ivmode = 0;
struct sun4i_req_ctx *op = ahash_request_ctx(areq);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
struct sun4i_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
@@ -196,6 +196,7 @@ static int sun4i_hash(struct ahash_request *areq)
struct sg_mapping_iter mi;
int in_r, err = 0;
size_t copied = 0;
+ __le32 wb = 0;

dev_dbg(ss->dev, "%s %s bc=%llu len=%u mode=%x wl=%u h0=%0x",
__func__, crypto_tfm_alg_name(areq->base.tfm),
@@ -407,7 +408,7 @@ static int sun4i_hash(struct ahash_request *areq)

nbw = op->len - 4 * nwait;
if (nbw) {
- wb = *(u32 *)(op->buf + nwait * 4);
+ wb = cpu_to_le32(*(u32 *)(op->buf + nwait * 4));
wb &= GENMASK((nbw * 8) - 1, 0);

op->byte_count += nbw;
@@ -416,7 +417,7 @@ static int sun4i_hash(struct ahash_request *areq)

/* write the remaining bytes of the nbw buffer */
wb |= ((1 << 7) << (nbw * 8));
- bf[j++] = wb;
+ bf[j++] = le32_to_cpu(wb);

/*
* number of space to pad to obtain 64o minus 8(size) minus 4 (final 1)
@@ -435,13 +436,13 @@ static int sun4i_hash(struct ahash_request *areq)

/* write the length of data */
if (op->mode == SS_OP_SHA1) {
- __be64 bits = cpu_to_be64(op->byte_count << 3);
- bf[j++] = lower_32_bits(bits);
- bf[j++] = upper_32_bits(bits);
+ __be64 *bits = (__be64 *)&bf[j];
+ *bits = cpu_to_be64(op->byte_count << 3);
+ j += 2;
} else {
- __le64 bits = op->byte_count << 3;
- bf[j++] = lower_32_bits(bits);
- bf[j++] = upper_32_bits(bits);
+ __le64 *bits = (__le64 *)&bf[j];
+ *bits = cpu_to_le64(op->byte_count << 3);
+ j += 2;
}
writesl(ss->base + SS_RXFIFO, bf, j);

@@ -487,7 +488,7 @@ static int sun4i_hash(struct ahash_request *areq)
}
} else {
for (i = 0; i < 4; i++) {
- v = readl(ss->base + SS_MD0 + i * 4);
+ v = cpu_to_le32(readl(ss->base + SS_MD0 + i * 4));
memcpy(areq->result + i * 4, &v, 4);
}
}
--
2.23.0