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linux/include/soc/qcom/ice.h

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soc: qcom: Make the Qualcomm UFS/SDCC ICE a dedicated driver This takes the already existing duplicated support in both ufs-qcom and sdhci-msm drivers and makes it a dedicated driver that can be used by both mentioned drivers. The reason for this is because, staring with SM8550, the ICE IP block is shared between UFS and SDCC, which means we need to probe a dedicated device and share it between those two consumers. So let's add the ICE dedicated driver as a soc driver. Platforms that already have ICE supported, will use it as a library as the of_qcom_ice_get will return an ICE instance created for the consumer device. This allows the backwards compatibility with old-style devicetree approach. Also, add support to HW version 4.x since it works out-of-the-box with the current driver. The 4.x HW version is found on SM8550 platform. Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230407105029.2274111-4-abel.vesa@linaro.org
2023-04-07 13:50:26 +03:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2023, Linaro Limited
*/
#ifndef __QCOM_ICE_H__
#define __QCOM_ICE_H__
scsi: soc: qcom: ice: Make qcom_ice_program_key() take struct blk_crypto_key qcom_ice_program_key() currently accepts the key as an array of bytes, algorithm ID, key size enum, and data unit size. However both callers have a struct blk_crypto_key which contains all that information. Thus they both have similar code that converts the blk_crypto_key into the form that qcom_ice_program_key() wants. Once wrapped key support is added, the key type would need to be added to the arguments too. Therefore, this patch changes qcom_ice_program_key() to take in all this information as a struct blk_crypto_key directly. The calling code is updated accordingly. This ends up being much simpler, and it makes the key type be passed down automatically once wrapped key support is added. Based on a patch by Gaurav Kashyap <quic_gaurkash@quicinc.com> that replaced the byte array argument only. This patch makes the blk_crypto_key replace other arguments like the algorithm ID too, ensuring that there remains only one source of truth. Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> # sm8650 Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20250404231533.174419-2-ebiggers@kernel.org Acked-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-04-04 16:15:30 -07:00
#include <linux/blk-crypto.h>
soc: qcom: Make the Qualcomm UFS/SDCC ICE a dedicated driver This takes the already existing duplicated support in both ufs-qcom and sdhci-msm drivers and makes it a dedicated driver that can be used by both mentioned drivers. The reason for this is because, staring with SM8550, the ICE IP block is shared between UFS and SDCC, which means we need to probe a dedicated device and share it between those two consumers. So let's add the ICE dedicated driver as a soc driver. Platforms that already have ICE supported, will use it as a library as the of_qcom_ice_get will return an ICE instance created for the consumer device. This allows the backwards compatibility with old-style devicetree approach. Also, add support to HW version 4.x since it works out-of-the-box with the current driver. The 4.x HW version is found on SM8550 platform. Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230407105029.2274111-4-abel.vesa@linaro.org
2023-04-07 13:50:26 +03:00
#include <linux/types.h>
struct qcom_ice;
int qcom_ice_enable(struct qcom_ice *ice);
int qcom_ice_resume(struct qcom_ice *ice);
int qcom_ice_suspend(struct qcom_ice *ice);
scsi: soc: qcom: ice: Make qcom_ice_program_key() take struct blk_crypto_key qcom_ice_program_key() currently accepts the key as an array of bytes, algorithm ID, key size enum, and data unit size. However both callers have a struct blk_crypto_key which contains all that information. Thus they both have similar code that converts the blk_crypto_key into the form that qcom_ice_program_key() wants. Once wrapped key support is added, the key type would need to be added to the arguments too. Therefore, this patch changes qcom_ice_program_key() to take in all this information as a struct blk_crypto_key directly. The calling code is updated accordingly. This ends up being much simpler, and it makes the key type be passed down automatically once wrapped key support is added. Based on a patch by Gaurav Kashyap <quic_gaurkash@quicinc.com> that replaced the byte array argument only. This patch makes the blk_crypto_key replace other arguments like the algorithm ID too, ensuring that there remains only one source of truth. Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> # sm8650 Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20250404231533.174419-2-ebiggers@kernel.org Acked-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-04-04 16:15:30 -07:00
int qcom_ice_program_key(struct qcom_ice *ice, unsigned int slot,
const struct blk_crypto_key *blk_key);
soc: qcom: Make the Qualcomm UFS/SDCC ICE a dedicated driver This takes the already existing duplicated support in both ufs-qcom and sdhci-msm drivers and makes it a dedicated driver that can be used by both mentioned drivers. The reason for this is because, staring with SM8550, the ICE IP block is shared between UFS and SDCC, which means we need to probe a dedicated device and share it between those two consumers. So let's add the ICE dedicated driver as a soc driver. Platforms that already have ICE supported, will use it as a library as the of_qcom_ice_get will return an ICE instance created for the consumer device. This allows the backwards compatibility with old-style devicetree approach. Also, add support to HW version 4.x since it works out-of-the-box with the current driver. The 4.x HW version is found on SM8550 platform. Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230407105029.2274111-4-abel.vesa@linaro.org
2023-04-07 13:50:26 +03:00
int qcom_ice_evict_key(struct qcom_ice *ice, int slot);
scsi: soc: qcom: ice: Add HWKM support to the ICE driver Qualcomm's Inline Crypto Engine (ICE) version 3.2 and later includes a key management hardware block called the Hardware Key Manager (HWKM). Add support for HWKM to the ICE driver. HWKM provides hardware-wrapped key support where the ICE (storage) keys are not exposed to software and instead are protected in hardware. Later patches will wire up this feature to ufs-qcom and sdhci-msm using the support added in this patch. HWKM and legacy mode are currently mutually exclusive. The selection of which mode to use has to be made before the storage driver(s) registers any inline encryption capable disk(s) with the block layer (i.e., generally at boot time) so that the appropriate crypto capabilities can be advertised to upper layers. Therefore, make the ICE driver select HWKM mode when the all of the following are true: - The new module parameter qcom_ice.use_wrapped_keys=1 is specified. - HWKM is present and is at least v2, i.e. ICE is v3.2.1 or later. - The SCM calls needed to fully use HWKM are supported by TrustZone. [EB: merged related patches; fixed the module parameter to work correctly; dropped unnecessary support for HWKM v1; fixed error handling; improved log messages, comments, and commit message; fixed naming; merged enable and init functions; and other cleanups] Signed-off-by: Gaurav Kashyap <quic_gaurkash@quicinc.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Co-developed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20250404231533.174419-3-ebiggers@kernel.org Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-04-04 16:15:31 -07:00
enum blk_crypto_key_type qcom_ice_get_supported_key_type(struct qcom_ice *ice);
int qcom_ice_derive_sw_secret(struct qcom_ice *ice,
const u8 *eph_key, size_t eph_key_size,
u8 sw_secret[BLK_CRYPTO_SW_SECRET_SIZE]);
int qcom_ice_generate_key(struct qcom_ice *ice,
u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]);
int qcom_ice_prepare_key(struct qcom_ice *ice,
const u8 *lt_key, size_t lt_key_size,
u8 eph_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]);
int qcom_ice_import_key(struct qcom_ice *ice,
const u8 *raw_key, size_t raw_key_size,
u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]);
soc: qcom: ice: introduce devm_of_qcom_ice_get Callers of of_qcom_ice_get() leak the device reference taken by of_find_device_by_node(). Introduce devm variant for of_qcom_ice_get(). Existing consumers need the ICE instance for the entire life of their device, thus exporting qcom_ice_put() is not required. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20250117-qcom-ice-fix-dev-leak-v2-1-1ffa5b6884cb@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-01-17 14:18:50 +00:00
struct qcom_ice *devm_of_qcom_ice_get(struct device *dev);
soc: qcom: Make the Qualcomm UFS/SDCC ICE a dedicated driver This takes the already existing duplicated support in both ufs-qcom and sdhci-msm drivers and makes it a dedicated driver that can be used by both mentioned drivers. The reason for this is because, staring with SM8550, the ICE IP block is shared between UFS and SDCC, which means we need to probe a dedicated device and share it between those two consumers. So let's add the ICE dedicated driver as a soc driver. Platforms that already have ICE supported, will use it as a library as the of_qcom_ice_get will return an ICE instance created for the consumer device. This allows the backwards compatibility with old-style devicetree approach. Also, add support to HW version 4.x since it works out-of-the-box with the current driver. The 4.x HW version is found on SM8550 platform. Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230407105029.2274111-4-abel.vesa@linaro.org
2023-04-07 13:50:26 +03:00
#endif /* __QCOM_ICE_H__ */
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