Crypto engine needs some temporary locations in external memory for
running RSA decrypt forms 2 and 3 (CRT).
These are named "tmp1" and "tmp2" in the PDB.
Update DMA mapping direction of tmp1 and tmp2 from TO_DEVICE to
BIDIRECTIONAL, since engine needs r/w access.
Cc: <stable@xxxxxxxxxxxxxxx> # 4.13+
Fixes: 52e26d77b8b3 ("crypto: caam - add support for RSA key form 2")
Fixes: 4a651b122adb ("crypto: caam - add support for RSA key form 3")
Signed-off-by: Horia Geantă <horia.geanta@xxxxxxx>
---
drivers/crypto/caam/caampkc.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index 578ea63a3109..f26d62e5533a 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -71,8 +71,8 @@ static void rsa_priv_f2_unmap(struct device *dev, struct rsa_edesc *edesc,
dma_unmap_single(dev, pdb->d_dma, key->d_sz, DMA_TO_DEVICE);
dma_unmap_single(dev, pdb->p_dma, p_sz, DMA_TO_DEVICE);
dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
- dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
- dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+ dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+ dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
}
static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
@@ -90,8 +90,8 @@ static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
dma_unmap_single(dev, pdb->dp_dma, p_sz, DMA_TO_DEVICE);
dma_unmap_single(dev, pdb->dq_dma, q_sz, DMA_TO_DEVICE);
dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
- dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
- dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+ dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+ dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
}
/* RSA Job Completion handler */
@@ -417,13 +417,13 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
goto unmap_p;
}
- pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+ pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, pdb->tmp1_dma)) {
dev_err(dev, "Unable to map RSA tmp1 memory\n");
goto unmap_q;
}
- pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+ pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, pdb->tmp2_dma)) {
dev_err(dev, "Unable to map RSA tmp2 memory\n");
goto unmap_tmp1;
@@ -451,7 +451,7 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
return 0;
unmap_tmp1:
- dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+ dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
unmap_q:
dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
unmap_p:
@@ -504,13 +504,13 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
goto unmap_dq;
}
- pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+ pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, pdb->tmp1_dma)) {
dev_err(dev, "Unable to map RSA tmp1 memory\n");
goto unmap_qinv;
}
- pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+ pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, pdb->tmp2_dma)) {
dev_err(dev, "Unable to map RSA tmp2 memory\n");
goto unmap_tmp1;
@@ -538,7 +538,7 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
return 0;
unmap_tmp1:
- dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+ dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
unmap_qinv:
dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
unmap_dq:
--
2.16.2
