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charset="utf-8" Add the wrapped key support for sdhci-msm by implementing the needed methods in struct blk_crypto_ll_ops and setting the appropriate flag in blk_crypto_profile::key_types_supported. --- This is a reworked version of the patchset https://lore.kernel.org/all/20241101031539.13285-1-quic_spuppala@quicinc.co= m/ that was sent by Seshu Madhavi Puppala. My changes rebase it to use the custom crypto profile support. Signed-off-by: Neeraj Soni --- Changes in v2: - Updated commit message for clarity. Changes in v1: - Added initial support for wrapped keys. --- drivers/mmc/host/sdhci-msm.c | 51 +++++++++++++++++++++++++++++++----- 1 file changed, 45 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 4e5edbf2fc9b..351f2a77068b 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -1911,11 +1911,6 @@ static int sdhci_msm_ice_init(struct sdhci_msm_host = *msm_host, if (IS_ERR_OR_NULL(ice)) return PTR_ERR_OR_ZERO(ice); =20 - if (qcom_ice_get_supported_key_type(ice) !=3D BLK_CRYPTO_KEY_TYPE_RAW) { - dev_warn(dev, "Wrapped keys not supported. Disabling inline encryption s= upport.\n"); - return 0; - } - msm_host->ice =3D ice; =20 /* Initialize the blk_crypto_profile */ @@ -1929,7 +1924,7 @@ static int sdhci_msm_ice_init(struct sdhci_msm_host *= msm_host, =20 profile->ll_ops =3D sdhci_msm_crypto_ops; profile->max_dun_bytes_supported =3D 4; - profile->key_types_supported =3D BLK_CRYPTO_KEY_TYPE_RAW; + profile->key_types_supported =3D qcom_ice_get_supported_key_type(ice); profile->dev =3D dev; =20 /* @@ -2009,9 +2004,53 @@ static int sdhci_msm_ice_keyslot_evict(struct blk_cr= ypto_profile *profile, return qcom_ice_evict_key(msm_host->ice, slot); } =20 +static int sdhci_msm_ice_derive_sw_secret(struct blk_crypto_profile *profi= le, + const u8 *eph_key, size_t eph_key_size, + u8 sw_secret[BLK_CRYPTO_SW_SECRET_SIZE]) +{ + struct sdhci_msm_host *msm_host =3D + sdhci_msm_host_from_crypto_profile(profile); + + return qcom_ice_derive_sw_secret(msm_host->ice, eph_key, eph_key_size, + sw_secret); +} + +static int sdhci_msm_ice_import_key(struct blk_crypto_profile *profile, + const u8 *raw_key, size_t raw_key_size, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct sdhci_msm_host *msm_host =3D + sdhci_msm_host_from_crypto_profile(profile); + + return qcom_ice_import_key(msm_host->ice, raw_key, raw_key_size, lt_key); +} + +static int sdhci_msm_ice_generate_key(struct blk_crypto_profile *profile, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct sdhci_msm_host *msm_host =3D + sdhci_msm_host_from_crypto_profile(profile); + + return qcom_ice_generate_key(msm_host->ice, lt_key); +} + +static int sdhci_msm_ice_prepare_key(struct blk_crypto_profile *profile, + const u8 *lt_key, size_t lt_key_size, + u8 eph_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct sdhci_msm_host *msm_host =3D + sdhci_msm_host_from_crypto_profile(profile); + + return qcom_ice_prepare_key(msm_host->ice, lt_key, lt_key_size, eph_key); +} + static const struct blk_crypto_ll_ops sdhci_msm_crypto_ops =3D { .keyslot_program =3D sdhci_msm_ice_keyslot_program, .keyslot_evict =3D sdhci_msm_ice_keyslot_evict, + .derive_sw_secret =3D sdhci_msm_ice_derive_sw_secret, + .import_key =3D sdhci_msm_ice_import_key, + .generate_key =3D sdhci_msm_ice_generate_key, + .prepare_key =3D sdhci_msm_ice_prepare_key, }; =20 #else /* CONFIG_MMC_CRYPTO */ --=20 2.34.1