kernel/drivers/tee/optee/call.c, branch linux-rolling-stable

tee: Refactor TEE subsystem header files

2024-04-03T07:19:31Z

Since commit 25559c22cef8 ("tee: add kernel internal client interface"), it has been a common include/linux/tee_drv.h header file which is shared to hold TEE subsystem internal bits along with the APIs exposed to the TEE client drivers. However, this practice is prone to TEE subsystem internal APIs abuse and especially so with the new TEE implementation drivers being added to reuse existing functionality. In order to address this split TEE subsystem internal bits as a separate header file: include/linux/tee_core.h which should be the one used by TEE implementation drivers. With that include/linux/tee_drv.h lists only APIs exposed by TEE subsystem to the TEE client drivers. Signed-off-by: Sumit Garg Signed-off-by: Balint Dobszay Signed-off-by: Jens Wiklander

optee: provide optee_do_bottom_half() as a common function

2023-11-17T14:55:38Z

Provides optee_do_bottom_half() and optee_stop_async_notif() as common functions callable from the FF-A ABI part of the driver too. Signed-off-by: Jens Wiklander Reviewed-by: Sumit Garg

tee: optee: support tracking system threads

2023-11-17T14:48:03Z

Adds support in the OP-TEE driver to keep track of reserved system threads. The logic allows one OP-TEE thread to be reserved to TEE system sessions. The optee_cq_*() functions are updated to handle this if enabled, that is when TEE describes how many thread context it supports and when at least 1 session has registered as a system session (using tee_client_system_session()). For sake of simplicity, initialization of call queue management is factorized into new helper function optee_cq_init(). The SMC ABI part of the driver enables this tracking, but the FF-A ABI part does not. Co-developed-by: Jens Wiklander Co-developed-by: Sumit Garg Signed-off-by: Sumit Garg Signed-off-by: Etienne Carriere Signed-off-by: Jens Wiklander

tee: optee: system thread call property

2023-11-17T14:48:03Z

Adds an argument to do_call_with_arg() handler to tell whether the call is a system thread call or not. This change always sets this info to false hence no functional change. This change prepares management of system invocation proposed in a later change. Reviewed-by: Sumit Garg Co-developed-by: Jens Wiklander Signed-off-by: Etienne Carriere [jw: clarified that it's system thread calls] Signed-off-by: Jens Wiklander

tee: optee: Fix typo Unuspported -> Unsupported

2023-03-14T10:57:03Z

Fix typo Unuspported -> Unsupported Signed-off-by: Jules Maselbas Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: remove vma linked list walk

2022-09-27T02:46:20Z

Use the VMA iterator instead. Change the calling convention of __check_mem_type() to pass in the mm instead of the first vma in the range. Link: https://lkml.kernel.org/r/20220906194824.2110408-39-Liam.Howlett@oracle.com Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka Reviewed-by: Davidlohr Bueso Tested-by: Yu Zhao Cc: Catalin Marinas Cc: David Hildenbrand Cc: David Howells Cc: SeongJae Park Cc: Sven Schnelle Cc: Will Deacon Signed-off-by: Andrew Morton

Merge tag 'optee-warning-for-v5.19' of https://git.linaro.org/people/jens.wiklander/linux-tee into arm/late

2022-05-30T12:44:27Z

Fix a compiler warning in OP-TEE driver * tag 'optee-warning-for-v5.19' of https://git.linaro.org/people/jens.wiklander/linux-tee: tee: optee: Pass a pointer to virt_addr_valid() Link: https://lore.kernel.org/r/20220530112612.GA1511426@jade Signed-off-by: Arnd Bergmann

tee: optee: Pass a pointer to virt_addr_valid()

2022-05-30T06:06:45Z

A pointer into virtual memory is represented by a (void *) not an u32, so the compiler warns: drivers/tee/optee/call.c:365:29: warning: passing argument 1 of 'virt_to_pfn' makes pointer from integer without a cast [-Wint-conversion] Fix this with an explicit cast. Cc: Sumit Garg Signed-off-by: Linus Walleij Reviewed-by: Sumit Garg [jw: fixed merge conflict] Signed-off-by: Jens Wiklander

Merge tag 'optee-rpc-arg-for-v5.19' of https://git.linaro.org/people/jens.wiklander/linux-tee into arm/drivers

2022-05-05T14:01:22Z

OP-TEE RPC argument cache Adds caching of the OP-TEE argument structure used to pass request to secure world. This reduces quite a bit of unnecessary alloc/free and possibly switching back and forth to secure work in order to register the buffers in some configurations, most notably FF-A. * tag 'optee-rpc-arg-for-v5.19' of https://git.linaro.org/people/jens.wiklander/linux-tee: optee: cache argument shared memory structs optee: add FF-A capability OPTEE_FFA_SEC_CAP_ARG_OFFSET optee: add OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_ARG optee: rename rpc_arg_count to rpc_param_count Link: https://lore.kernel.org/r/20220504201759.GA180315@jade Signed-off-by: Arnd Bergmann

optee: cache argument shared memory structs

2022-04-25T19:13:05Z

Implements a cache to handle shared memory used to pass the argument struct needed when doing a normal yielding call into secure world. Signed-off-by: Jens Wiklander