[PATCH RESEND v7 05/17] ice, ufs, mmc: use the blk_crypto_key struct when programming the key

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Gaurav Kashyap <quic_gaurkash@quicinc.com>

The program key ops in the storage controller does not pass on the
blk_crypto_key structure to ICE, this is okay with raw keys of standard
AES XTS sizes. However, wrapped keyblobs can be of any size and in
preparation for that, modify the ICE and storage controller APIs to
accept blk_crypto_key which can carry larger keys and indicate their
size.

Reviewed-by: Om Prakash Singh <quic_omprsing@quicinc.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Gaurav Kashyap <quic_gaurkash@quicinc.com>
Reviewed-by: Konrad Dybcio <konradybcio@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/mmc/host/cqhci-crypto.c  | 7 ++++---
 drivers/mmc/host/cqhci.h         | 2 ++
 drivers/mmc/host/sdhci-msm.c     | 6 ++++--
 drivers/soc/qcom/ice.c           | 6 +++---
 drivers/ufs/core/ufshcd-crypto.c | 7 ++++---
 drivers/ufs/host/ufs-qcom.c      | 6 ++++--
 include/soc/qcom/ice.h           | 5 +++--
 include/ufs/ufshcd.h             | 1 +
 8 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/drivers/mmc/host/cqhci-crypto.c b/drivers/mmc/host/cqhci-crypto.c
index 6652982410ec5..91da6de1d6501 100644
--- a/drivers/mmc/host/cqhci-crypto.c
+++ b/drivers/mmc/host/cqhci-crypto.c
@@ -32,6 +32,7 @@ cqhci_host_from_crypto_profile(struct blk_crypto_profile *profile)
 }
 
 static int cqhci_crypto_program_key(struct cqhci_host *cq_host,
+				    const struct blk_crypto_key *bkey,
 				    const union cqhci_crypto_cfg_entry *cfg,
 				    int slot)
 {
@@ -39,7 +40,7 @@ static int cqhci_crypto_program_key(struct cqhci_host *cq_host,
 	int i;
 
 	if (cq_host->ops->program_key)
-		return cq_host->ops->program_key(cq_host, cfg, slot);
+		return cq_host->ops->program_key(cq_host, bkey, cfg, slot);
 
 	/* Clear CFGE */
 	cqhci_writel(cq_host, 0, slot_offset + 16 * sizeof(cfg->reg_val[0]));
@@ -99,7 +100,7 @@ static int cqhci_crypto_keyslot_program(struct blk_crypto_profile *profile,
 		memcpy(cfg.crypto_key, key->raw, key->size);
 	}
 
-	err = cqhci_crypto_program_key(cq_host, &cfg, slot);
+	err = cqhci_crypto_program_key(cq_host, key, &cfg, slot);
 
 	memzero_explicit(&cfg, sizeof(cfg));
 	return err;
@@ -113,7 +114,7 @@ static int cqhci_crypto_clear_keyslot(struct cqhci_host *cq_host, int slot)
 	 */
 	union cqhci_crypto_cfg_entry cfg = {};
 
-	return cqhci_crypto_program_key(cq_host, &cfg, slot);
+	return cqhci_crypto_program_key(cq_host, NULL, &cfg, slot);
 }
 
 static int cqhci_crypto_keyslot_evict(struct blk_crypto_profile *profile,
diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h
index fab9d74445ba7..06099fd32f23e 100644
--- a/drivers/mmc/host/cqhci.h
+++ b/drivers/mmc/host/cqhci.h
@@ -12,6 +12,7 @@
 #include <linux/completion.h>
 #include <linux/wait.h>
 #include <linux/irqreturn.h>
+#include <linux/blk-crypto.h>
 #include <asm/io.h>
 
 /* registers */
@@ -291,6 +292,7 @@ struct cqhci_host_ops {
 	void (*post_disable)(struct mmc_host *mmc);
 #ifdef CONFIG_MMC_CRYPTO
 	int (*program_key)(struct cqhci_host *cq_host,
+			   const struct blk_crypto_key *bkey,
 			   const union cqhci_crypto_cfg_entry *cfg, int slot);
 #endif
 	void (*set_tran_desc)(struct cqhci_host *cq_host, u8 **desc,
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e00208535bd1c..b8770524c0087 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -1859,6 +1859,7 @@ static __maybe_unused int sdhci_msm_ice_suspend(struct sdhci_msm_host *msm_host)
  * vendor-specific SCM calls for this; it doesn't support the standard way.
  */
 static int sdhci_msm_program_key(struct cqhci_host *cq_host,
+				 const struct blk_crypto_key *bkey,
 				 const union cqhci_crypto_cfg_entry *cfg,
 				 int slot)
 {
@@ -1866,6 +1867,7 @@ static int sdhci_msm_program_key(struct cqhci_host *cq_host,
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
 	union cqhci_crypto_cap_entry cap;
+	u8 ice_key_size;
 
 	/* Only AES-256-XTS has been tested so far. */
 	cap = cq_host->crypto_cap_array[cfg->crypto_cap_idx];
@@ -1873,11 +1875,11 @@ static int sdhci_msm_program_key(struct cqhci_host *cq_host,
 		cap.key_size != CQHCI_CRYPTO_KEY_SIZE_256)
 		return -EINVAL;
 
+	ice_key_size = QCOM_ICE_CRYPTO_KEY_SIZE_256;
 	if (cfg->config_enable & CQHCI_CRYPTO_CONFIGURATION_ENABLE)
 		return qcom_ice_program_key(msm_host->ice,
 					    QCOM_ICE_CRYPTO_ALG_AES_XTS,
-					    QCOM_ICE_CRYPTO_KEY_SIZE_256,
-					    cfg->crypto_key,
+					    ice_key_size, bkey,
 					    cfg->data_unit_size, slot);
 	else
 		return qcom_ice_evict_key(msm_host->ice, slot);
diff --git a/drivers/soc/qcom/ice.c b/drivers/soc/qcom/ice.c
index 393d2d1d275f1..e89baaf574bc1 100644
--- a/drivers/soc/qcom/ice.c
+++ b/drivers/soc/qcom/ice.c
@@ -163,8 +163,8 @@ EXPORT_SYMBOL_GPL(qcom_ice_suspend);
 
 int qcom_ice_program_key(struct qcom_ice *ice,
 			 u8 algorithm_id, u8 key_size,
-			 const u8 crypto_key[], u8 data_unit_size,
-			 int slot)
+			 const struct blk_crypto_key *bkey,
+			 u8 data_unit_size, int slot)
 {
 	struct device *dev = ice->dev;
 	union {
@@ -183,7 +183,7 @@ int qcom_ice_program_key(struct qcom_ice *ice,
 		return -EINVAL;
 	}
 
-	memcpy(key.bytes, crypto_key, AES_256_XTS_KEY_SIZE);
+	memcpy(key.bytes, bkey->raw, AES_256_XTS_KEY_SIZE);
 
 	/* The SCM call requires that the key words are encoded in big endian */
 	for (i = 0; i < ARRAY_SIZE(key.words); i++)
diff --git a/drivers/ufs/core/ufshcd-crypto.c b/drivers/ufs/core/ufshcd-crypto.c
index 7d3a3e228db0d..33083e0cad6e1 100644
--- a/drivers/ufs/core/ufshcd-crypto.c
+++ b/drivers/ufs/core/ufshcd-crypto.c
@@ -18,6 +18,7 @@ static const struct ufs_crypto_alg_entry {
 };
 
 static int ufshcd_program_key(struct ufs_hba *hba,
+			      const struct blk_crypto_key *bkey,
 			      const union ufs_crypto_cfg_entry *cfg, int slot)
 {
 	int i;
@@ -27,7 +28,7 @@ static int ufshcd_program_key(struct ufs_hba *hba,
 	ufshcd_hold(hba);
 
 	if (hba->vops && hba->vops->program_key) {
-		err = hba->vops->program_key(hba, cfg, slot);
+		err = hba->vops->program_key(hba, bkey, cfg, slot);
 		goto out;
 	}
 
@@ -89,7 +90,7 @@ static int ufshcd_crypto_keyslot_program(struct blk_crypto_profile *profile,
 		memcpy(cfg.crypto_key, key->raw, key->size);
 	}
 
-	err = ufshcd_program_key(hba, &cfg, slot);
+	err = ufshcd_program_key(hba, key, &cfg, slot);
 
 	memzero_explicit(&cfg, sizeof(cfg));
 	return err;
@@ -107,7 +108,7 @@ static int ufshcd_crypto_keyslot_evict(struct blk_crypto_profile *profile,
 	 */
 	union ufs_crypto_cfg_entry cfg = {};
 
-	return ufshcd_program_key(hba, &cfg, slot);
+	return ufshcd_program_key(hba, NULL, &cfg, slot);
 }
 
 /*
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 68040b2ab5f82..44fb4a4c0f2d7 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -150,6 +150,7 @@ static inline int ufs_qcom_ice_suspend(struct ufs_qcom_host *host)
 }
 
 static int ufs_qcom_ice_program_key(struct ufs_hba *hba,
+				    const struct blk_crypto_key *bkey,
 				    const union ufs_crypto_cfg_entry *cfg,
 				    int slot)
 {
@@ -157,6 +158,7 @@ static int ufs_qcom_ice_program_key(struct ufs_hba *hba,
 	union ufs_crypto_cap_entry cap;
 	bool config_enable =
 		cfg->config_enable & UFS_CRYPTO_CONFIGURATION_ENABLE;
+	u8 ice_key_size;
 
 	/* Only AES-256-XTS has been tested so far. */
 	cap = hba->crypto_cap_array[cfg->crypto_cap_idx];
@@ -164,11 +166,11 @@ static int ufs_qcom_ice_program_key(struct ufs_hba *hba,
 	    cap.key_size != UFS_CRYPTO_KEY_SIZE_256)
 		return -EOPNOTSUPP;
 
+	ice_key_size = QCOM_ICE_CRYPTO_KEY_SIZE_256;
 	if (config_enable)
 		return qcom_ice_program_key(host->ice,
 					    QCOM_ICE_CRYPTO_ALG_AES_XTS,
-					    QCOM_ICE_CRYPTO_KEY_SIZE_256,
-					    cfg->crypto_key,
+					    ice_key_size, bkey,
 					    cfg->data_unit_size, slot);
 	else
 		return qcom_ice_evict_key(host->ice, slot);
diff --git a/include/soc/qcom/ice.h b/include/soc/qcom/ice.h
index 5870a94599a25..9dd835dba2a78 100644
--- a/include/soc/qcom/ice.h
+++ b/include/soc/qcom/ice.h
@@ -7,6 +7,7 @@
 #define __QCOM_ICE_H__
 
 #include <linux/types.h>
+#include <linux/blk-crypto.h>
 
 struct qcom_ice;
 
@@ -30,8 +31,8 @@ int qcom_ice_resume(struct qcom_ice *ice);
 int qcom_ice_suspend(struct qcom_ice *ice);
 int qcom_ice_program_key(struct qcom_ice *ice,
 			 u8 algorithm_id, u8 key_size,
-			 const u8 crypto_key[], u8 data_unit_size,
-			 int slot);
+			 const struct blk_crypto_key *bkey,
+			 u8 data_unit_size, int slot);
 int qcom_ice_evict_key(struct qcom_ice *ice, int slot);
 struct qcom_ice *of_qcom_ice_get(struct device *dev);
 #endif /* __QCOM_ICE_H__ */
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index d7aca9e61684f..bc6f08397769c 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -373,6 +373,7 @@ struct ufs_hba_variant_ops {
 				struct devfreq_dev_profile *profile,
 				struct devfreq_simple_ondemand_data *data);
 	int	(*program_key)(struct ufs_hba *hba,
+			       const struct blk_crypto_key *bkey,
 			       const union ufs_crypto_cfg_entry *cfg, int slot);
 	int	(*fill_crypto_prdt)(struct ufs_hba *hba,
 				    const struct bio_crypt_ctx *crypt_ctx,

-- 
2.45.2