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Message-ID: <20240411133832.2896463-14-avromanov@salutedevices.com>
Date: Thu, 11 Apr 2024 16:38:22 +0300
From: Alexey Romanov <avromanov@...utedevices.com>
To: <neil.armstrong@...aro.org>, <clabbe@...libre.com>,
<herbert@...dor.apana.org.au>, <davem@...emloft.net>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<khilman@...libre.com>, <jbrunet@...libre.com>,
<martin.blumenstingl@...glemail.com>, <vadim.fedorenko@...ux.dev>
CC: <linux-crypto@...r.kernel.org>, <linux-amlogic@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <kernel@...utedevices.com>, Alexey
Romanov <avromanov@...utedevices.com>
Subject: [PATCH v7 13/23] drivers: crypto: meson: use fallback for 192-bit keys
Unforunately, not all Amlogic SoC's have a 192-bit key
support for AES algo. In this case, use fallback.
Signed-off-by: Alexey Romanov <avromanov@...utedevices.com>
---
drivers/crypto/amlogic/amlogic-gxl-cipher.c | 7 +++++++
drivers/crypto/amlogic/amlogic-gxl-core.c | 1 +
drivers/crypto/amlogic/amlogic-gxl.h | 2 ++
3 files changed, 10 insertions(+)
diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
index 14621495de84..30f248ca31c7 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
@@ -41,6 +41,13 @@ static bool meson_cipher_need_fallback_sg(struct skcipher_request *areq,
static bool meson_cipher_need_fallback(struct skcipher_request *areq)
{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
+ struct meson_cipher_tfm_ctx *op = crypto_skcipher_ctx_dma(tfm);
+ struct meson_dev *mc = op->mc;
+
+ if (op->keymode == DESC_MODE_AES_192 && !mc->pdata->support_192bit_key)
+ return true;
+
if (areq->cryptlen == 0)
return true;
diff --git a/drivers/crypto/amlogic/amlogic-gxl-core.c b/drivers/crypto/amlogic/amlogic-gxl-core.c
index 2c8387906655..4acacd925a21 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-core.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-core.c
@@ -283,6 +283,7 @@ static const struct meson_pdata meson_gxl_pdata = {
.setup_desc_cnt = 3,
.hasher_supported = false,
.reverse_keyiv = true,
+ .support_192bit_key = true,
};
static const struct of_device_id meson_crypto_of_match_table[] = {
diff --git a/drivers/crypto/amlogic/amlogic-gxl.h b/drivers/crypto/amlogic/amlogic-gxl.h
index 2eee3e0ea0b2..86dd9f10debe 100644
--- a/drivers/crypto/amlogic/amlogic-gxl.h
+++ b/drivers/crypto/amlogic/amlogic-gxl.h
@@ -98,6 +98,7 @@ struct meson_flow {
* @reg_status: offset to status register
* @setup_desc_cnt: number of setup descriptor to configure.
* @hasher_supported: indecates whether hasher is supported.
+ * @support_192bit_key: indicates whether platform support AES 192-bit key
*/
struct meson_pdata {
u32 descs_reg;
@@ -105,6 +106,7 @@ struct meson_pdata {
u32 setup_desc_cnt;
bool hasher_supported;
bool reverse_keyiv;
+ bool support_192bit_key;
};
/*
--
2.34.1
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