kernel/linux.git/drivers/tee/optee/call.c, branch v6.2

optee: remove vma linked list walk

2022-09-27T02:46:20+00:00

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

2022-05-30T12:44:27+00:00

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()

2022-05-30T06:06:45+00:00

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

2022-05-05T14:01:22+00:00

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

2022-04-25T19:13:05+00:00

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

optee: add OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_ARG

2022-04-13T05:37:20+00:00

Adds OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_ARG where the struct optee_msg_arg to be used for RPC is appended in the memory following the normal argument struct optee_msg_arg. This is an optimization to avoid caching the RPC argument struct while still maintaining similar performance as if it was cached. OPTEE_SMC_CALL_WITH_REGD_ARG optimized one step further by using a registered shared memory object instead. It's in other aspects identical to OPTEE_SMC_CALL_WITH_RPC_ARG. The presence of OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_ARG is indicated by the new OPTEE_SMC_SEC_CAP_RPC_ARG bit returned by OPTEE_SMC_EXCHANGE_CAPABILITIES. OPTEE_SMC_EXCHANGE_CAPABILITIES also reports the number of arguments that the RPC argument struct must have room for. OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_ARG can be used interleaved with difference that when OPTEE_SMC_CALL_WITH_RPC_ARG is used the RPC argument struct to be used is the one appended to the normal argument struct. The same is true for OPTEE_SMC_CALL_WITH_REGD_ARG. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: rename rpc_arg_count to rpc_param_count

2022-04-13T05:33:59+00:00

Renames the field rpc_arg_count in struct optee to rpc_param_count. Function parameter names and local variables are also renamed to match. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

tee: make tee_shm_register_kernel_buf vmalloc supported

2022-04-05T06:04:16+00:00

In some low-memory devices, it's hard to aquire large-orders pages, this patch allowed user using scatter pages to register shm. Signed-off-by: Phil Chang Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

tee: replace tee_shm_alloc()

2022-02-16T06:49:41+00:00

tee_shm_alloc() is replaced by three new functions, tee_shm_alloc_user_buf() - for user mode allocations, replacing passing the flags TEE_SHM_MAPPED | TEE_SHM_DMA_BUF tee_shm_alloc_kernel_buf() - for kernel mode allocations, slightly optimized compared to using the flags TEE_SHM_MAPPED | TEE_SHM_DMA_BUF. tee_shm_alloc_priv_buf() - primarily for TEE driver internal use. This also makes the interface easier to use as we can get rid of the somewhat hard to use flags parameter. The TEE subsystem and the TEE drivers are updated to use the new functions instead. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: add FF-A support

2021-10-18T09:44:23+00:00

Adds support for using FF-A [1] as transport to the OP-TEE driver. Introduces struct optee_msg_param_fmem which carries all information needed when OP-TEE is calling FFA_MEM_RETRIEVE_REQ to get the shared memory reference mapped by the hypervisor in S-EL2. Register usage is also updated to include the information needed. The FF-A part of this driver is enabled if CONFIG_ARM_FFA_TRANSPORT is enabled. [1] https://developer.arm.com/documentation/den0077/latest Acked-by: Sumit Garg Signed-off-by: Jens Wiklander