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crypto: omap-aes - add IV output handling 

Currently omap-aes driver does not copy end result IV out at all. This
is evident with the additional checks done at the crypto test manager.
Fix by copying out the IV values from HW.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tero Kristo 2019-11-05 16:00:54 +02:00 committed by Herbert Xu
parent eb5818aa08
commit 891dcbbb0e
1 changed files with 12 additions and 0 deletions
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12
drivers/crypto/omap-aes.c
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@ -479,6 +479,14 @@ static int omap_aes_crypt_req(struct crypto_engine *engine,
return omap_aes_crypt_dma_start(dd);
}
static void omap_aes_copy_ivout(struct omap_aes_dev *dd, u8 *ivbuf)
{
int i;
for (i = 0; i < 4; i++)
((u32 *)ivbuf)[i] = omap_aes_read(dd, AES_REG_IV(dd, i));
}
static void omap_aes_done_task(unsigned long data)
{
struct omap_aes_dev *dd = (struct omap_aes_dev *)data;
@ -500,6 +508,10 @@ static void omap_aes_done_task(unsigned long data)
omap_crypto_cleanup(&dd->out_sgl, dd->orig_out, 0, dd->total_save,
FLAGS_OUT_DATA_ST_SHIFT, dd->flags);
/* Update IV output */
if (dd->flags & (FLAGS_CBC | FLAGS_CTR))
omap_aes_copy_ivout(dd, dd->req->iv);
omap_aes_finish_req(dd, 0);
pr_debug("exit\n");