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ANDROID: ufshcd-crypto: export cap find API

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Export symbol ufshcd_crypto_cap_find to find
the crypto capabilities from the crypto engine
in the storage controller. This is used to
validate that the crypto_mode and data_unit_size
provided is supported by the inline encryption
hardware. This can be used by all vops

Bug: 147209885

Change-Id: I42de2d4f645adb2e4f688716434fd2884ff043bc
Signed-off-by: Barani Muthukumaran <bmuthuku@codeaurora.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Barani Muthukumaran 2020-01-21 15:09:37 -08:00 committed by Todd Kjos
parent d9d33d9acc
commit 4f6a1f4aff
2 changed files with 8 additions and 3 deletions
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7
drivers/scsi/ufs/ufshcd-crypto.c
View File

@ -37,9 +37,9 @@ static size_t get_keysize_bytes(enum ufs_crypto_key_size size)
} }
} }
static int ufshcd_crypto_cap_find(struct ufs_hba *hba, int ufshcd_crypto_cap_find(struct ufs_hba *hba,
enum blk_crypto_mode_num crypto_mode, enum blk_crypto_mode_num crypto_mode,
unsigned int data_unit_size) unsigned int data_unit_size)
{ {
enum ufs_crypto_alg ufs_alg; enum ufs_crypto_alg ufs_alg;
u8 data_unit_mask; u8 data_unit_mask;
@ -71,6 +71,7 @@ static int ufshcd_crypto_cap_find(struct ufs_hba *hba,
return -EINVAL; return -EINVAL;
} }
EXPORT_SYMBOL(ufshcd_crypto_cap_find);
/** /**
* ufshcd_crypto_cfg_entry_write_key - Write a key into a crypto_cfg_entry * ufshcd_crypto_cfg_entry_write_key - Write a key into a crypto_cfg_entry

4
drivers/scsi/ufs/ufshcd-crypto.h
View File

@ -36,6 +36,10 @@ static inline bool ufshcd_is_crypto_enabled(struct ufs_hba *hba)
} }
/* Functions implementing UFSHCI v2.1 specification behaviour */ /* Functions implementing UFSHCI v2.1 specification behaviour */
int ufshcd_crypto_cap_find(struct ufs_hba *hba,
enum blk_crypto_mode_num crypto_mode,
unsigned int data_unit_size);
int ufshcd_prepare_lrbp_crypto_spec(struct ufs_hba *hba, int ufshcd_prepare_lrbp_crypto_spec(struct ufs_hba *hba,
struct scsi_cmnd *cmd, struct scsi_cmnd *cmd,
struct ufshcd_lrb *lrbp); struct ufshcd_lrb *lrbp);