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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-73e25acd9cbsm9353642b3a.174.2025.04.28.23.06.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Apr 2025 23:06:54 -0700 (PDT) From: Amirreza Zarrabi Subject: [PATCH v4 00/11] Trusted Execution Environment (TEE) driver for Qualcomm TEE (QTEE) Date: Mon, 28 Apr 2025 23:06:21 -0700 Message-Id: <20250428-qcom-tee-using-tee-ss-without-mem-obj-v4-0-6a143640a6cb@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAF1sEGgC/5XNwW7CMAwG4FdBOc8ocdJm48R7IA4ldaintaFNW zahvjum07TDLuxi+Y/i77+pTANTVrvNTQ00c+bUSXAvGxWaqjsTcC1ZoUZnZEAfUgsjEUyZu/O 65QxXHps0jdBSC+n0DrbEUJbW6QK9EusyUOTPtedwlNxwHtPwtdbO5vH634bZgIZYaKSoDWlT7 vuJA3dhK+fq0THjjyu/nndRXHzzVIVa19bFv679dS36Z10rro+u8NpbfMV6n3Le9lP1IeftN74 syx02MO6RkQEAAA== To: Jens Wiklander , Sumit Garg , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , Apurupa Pattapu , Kees Cook , "Gustavo A. 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Silva" , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-doc@vger.kernel.org, Amirreza Zarrabi , Sumit Garg X-Mailer: b4 0.13.0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDI5MDA0NCBTYWx0ZWRfX0jegeu5Rm11K 3jLULam8jJSFD1wHaON1ntzVtq3WHLxKkShnJHu7POkrb8aL3gfadT9g6T20wZbiVzmeRxKZVgt PnUcbWNsKY+efbCL5y9l0ND3ktvQRNaXRjwzgszFKFOgeVeQZnx3eYlEEu3rU4LNbF3Cc7RG4C9 eFX9mg75X+HeUWmXqc5TcgjH7R6Ofyd/tR4gLJ2hOG+T1E+Bl+YwNy+9eCWw4gnfEMNOuKn2ATw UjQZY3ehU3QjmKZkMCxe9CRKNlsyrERY8Po77jZJbh7pSY0FuO7RvN7zsdDuz+ZufsMKQNXN2+4 qzhs4dLtHYSyu7sL0nlfjTWBtqvRm07/KHv/OV08DMy298TdQvVDrj7B88nh9wCJzmBSvPAtj6Q hpcPeY2cSCKh3Gdg/9L4C1mfCh5umtMQLm7xaCvzJ/ucejhNn9RfqjRH0k3Bj7sD/m5bUI6J X-Proofpoint-GUID: Gh4wPQp0BeA_djOtmRVxKMgWYFwNv6xL X-Proofpoint-ORIG-GUID: Gh4wPQp0BeA_djOtmRVxKMgWYFwNv6xL X-Authority-Analysis: v=2.4 cv=M/5NKzws c=1 sm=1 tr=0 ts=68106c80 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=XR8D0OoHHMoA:10 a=NEAV23lmAAAA:8 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=CT4NIRYFaVtSUlOmZkwA:9 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-04-29_01,2025-04-24_02,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 mlxscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 adultscore=0 bulkscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504290044 This patch series introduces a Trusted Execution Environment (TEE) driver for Qualcomm TEE (QTEE). QTEE enables Trusted Applications (TAs) and services to run securely. It uses an object-based interface, where each service is an object with sets of operations. Clients can invoke these operations on objects, which can generate results, including other objects. For example, an object can load a TA and return another object that represents the loaded TA, allowing access to its services. Kernel and userspace services are also available to QTEE through a similar approach. QTEE makes callback requests that are converted into object invocations. These objects can represent services within the kernel or userspace process. Note: This patch series focuses on QTEE objects and userspace services. Linux already provides a TEE subsystem, which is described in [1]. The tee subsystem provides a generic ioctl interface, TEE_IOC_INVOKE, which can be used by userspace to talk to a TEE backend driver. We extend the Linux TEE subsystem to understand object parameters and an ioctl call so client can invoke objects in QTEE: - TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_* - TEE_IOC_OBJECT_INVOKE The existing ioctl calls TEE_IOC_SUPPL_RECV and TEE_IOC_SUPPL_SEND are used for invoking services in the userspace process by QTEE. The TEE backend driver uses the QTEE Transport Message to communicate with QTEE. Interactions through the object INVOKE interface are translated into QTEE messages. Likewise, object invocations from QTEE for userspace objects are converted into SEND/RECV ioctl calls to supplicants. The details of QTEE Transport Message to communicate with QTEE is available in [PATCH 11/11] Documentation: tee: Add Qualcomm TEE driver. You can run basic tests with following steps: git clone https://github.com/quic/quic-teec.git cd quic-teec mkdir build cmake .. -DCMAKE_TOOLCHAIN_FILE=CMakeToolchain.txt -DBUILD_UNITTEST=ON https://github.com/quic/quic-teec/blob/main/README.md lists dependencies needed to build the above. This series has been tested for basic QTEE object invocations and callback requests, including loading a TA and requesting services form the TA. Tested platforms: sm8650-mtp [1] https://www.kernel.org/doc/Documentation/tee.txt Signed-off-by: Amirreza Zarrabi Changes in v4: - Move teedev_ctx_get/put and tee_device_get/put to tee_core.h. - Rename object to id in struct tee_ioctl_object_invoke_arg. - Replace spinlock with mutex for qtee_objects_idr. - Move qcomtee_object_get to qcomtee_user/memobj_param_to_object. - More code cleanup following the comments. - Cleanup documentations. - Update MAINTAINERS file. - Link to v3: https://lore.kernel.org/r/20250327-qcom-tee-using-tee-ss-without-mem-obj-v3-0-7f457073282d@oss.qualcomm.com Changes in v3: - Export shm_bridge create/delete APIs. - Enable support for QTEE memory objects. - Update the memory management code to use the TEE subsystem for all allocations using the pool. - Move all driver states into the driver's main service struct. - Add more documentations. - Link to v2: https://lore.kernel.org/r/20250202-qcom-tee-using-tee-ss-without-mem-obj-v2-0-297eacd0d34f@quicinc.com Changes in v2: - Clean up commit messages and comments. - Use better names such as ubuf instead of membuf or QCOMTEE prefix instead of QCOM_TEE, or names that are more consistent with other TEE-backend drivers such as qcomtee_context_data instead of qcom_tee_context. - Drop the DTS patch and instantiate the device from the scm driver. - Use a single structure for all driver's internal states. - Drop srcu primitives and use the existing mutex for synchronization between the supplicant and QTEE. - Directly use tee_context to track the lifetime of qcomtee_context_data. - Add close_context() to be called when the user closes the tee_context. - Link to v1: https://lore.kernel.org/r/20241202-qcom-tee-using-tee-ss-without-mem-obj-v1-0-f502ef01e016@quicinc.com Changes in v1: - It is a complete rewrite to utilize the TEE subsystem. - Link to RFC: https://lore.kernel.org/all/20240702-qcom-tee-object-and-ioctls-v1-0-633c3ddf57ee@quicinc.com --- Amirreza Zarrabi (11): tee: allow a driver to allocate a tee_device without a pool tee: add close_context to TEE driver operation tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF firmware: qcom: scm: add support for object invocation firmware: qcom: scm: remove unused arguments to the shm_brige firmware: qcom: tzmem: export shm_bridge create/delete tee: add Qualcomm TEE driver qcomtee: add primordial object qcomtee: enable TEE_IOC_SHM_ALLOC ioctl Documentation: tee: Add Qualcomm TEE driver Documentation/tee/index.rst | 1 + Documentation/tee/qtee.rst | 150 ++++++ MAINTAINERS | 8 + drivers/firmware/qcom/qcom_scm.c | 132 ++++- drivers/firmware/qcom/qcom_scm.h | 7 + drivers/firmware/qcom/qcom_tzmem.c | 57 ++- drivers/tee/Kconfig | 1 + drivers/tee/Makefile | 1 + drivers/tee/qcomtee/Kconfig | 10 + drivers/tee/qcomtee/Makefile | 11 + drivers/tee/qcomtee/async.c | 160 ++++++ drivers/tee/qcomtee/call.c | 770 +++++++++++++++++++++++++++++ drivers/tee/qcomtee/core.c | 815 +++++++++++++++++++++++++++++++ drivers/tee/qcomtee/mem_obj.c | 172 +++++++ drivers/tee/qcomtee/primordial_obj.c | 115 +++++ drivers/tee/qcomtee/qcom_scm.c | 38 ++ drivers/tee/qcomtee/qcomtee_msg.h | 239 +++++++++ drivers/tee/qcomtee/qcomtee_private.h | 264 ++++++++++ drivers/tee/qcomtee/release.c | 48 ++ drivers/tee/qcomtee/shm.c | 146 ++++++ drivers/tee/qcomtee/user_obj.c | 713 +++++++++++++++++++++++++++ drivers/tee/tee_core.c | 127 ++++- drivers/tee/tee_private.h | 6 - include/linux/firmware/qcom/qcom_scm.h | 31 +- include/linux/firmware/qcom/qcom_tee.h | 302 ++++++++++++ include/linux/firmware/qcom/qcom_tzmem.h | 15 + include/linux/tee_core.h | 54 +- include/linux/tee_drv.h | 12 + include/uapi/linux/tee.h | 54 +- 29 files changed, 4427 insertions(+), 32 deletions(-) --- base-commit: 33035b665157558254b3c21c3f049fd728e72368 change-id: 20241202-qcom-tee-using-tee-ss-without-mem-obj-362c66340527 Best regards, -- Amirreza Zarrabi