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path: root/drivers/tee/optee/call.c
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2022-09-27optee: remove vma linked list walkMatthew Wilcox (Oracle)1-8/+10
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) <willy@infradead.org> Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Tested-by: Yu Zhao <yuzhao@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: SeongJae Park <sj@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-05-30Merge tag 'optee-warning-for-v5.19' of ↵Arnd Bergmann1-1/+1
https://git.linaro.org/people/jens.wiklander/linux-tee into arm/late 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 <arnd@arndb.de>
2022-05-30tee: optee: Pass a pointer to virt_addr_valid()Linus Walleij1-1/+1
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 <sumit.garg@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> [jw: fixed merge conflict] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2022-05-05Merge tag 'optee-rpc-arg-for-v5.19' of ↵Arnd Bergmann1-44/+194
https://git.linaro.org/people/jens.wiklander/linux-tee into arm/drivers 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 <arnd@arndb.de>
2022-04-25optee: cache argument shared memory structsJens Wiklander1-43/+193
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 <jens.wiklander@linaro.org>
2022-04-13optee: add OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_ARGJens Wiklander1-1/+1
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 <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2022-04-13optee: rename rpc_arg_count to rpc_param_countJens Wiklander1-3/+3
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 <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2022-04-05tee: make tee_shm_register_kernel_buf vmalloc supportedPhil Chang1-1/+1
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 <phil.chang@mediatek.com> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2022-02-16tee: replace tee_shm_alloc()Jens Wiklander1-1/+1
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 <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-10-18optee: add FF-A supportJens Wiklander1-2/+11
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 <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-10-18optee: isolate smc abiJens Wiklander1-356/+13
Isolate the ABI based on raw SMCs. Code specific to the raw SMC ABI is moved into smc_abi.c. This makes room for other ABIs with a clear separation. The driver changes to use module_init()/module_exit() instead of module_platform_driver(). The platform_driver_register() and platform_driver_unregister() functions called directly to keep the same behavior. This is needed because module_platform_driver() is based on module_driver() which can only be used once in a module. A function optee_rpc_cmd() is factored out from the function handle_rpc_func_cmd() to handle the ABI independent part of RPC processing. This patch is not supposed to change the driver behavior, it's only a matter of reorganizing the code. Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-10-15optee: refactor driver with internal callbacksJens Wiklander1-44/+42
The OP-TEE driver is refactored with three internal callbacks replacing direct calls to optee_from_msg_param(), optee_to_msg_param() and optee_do_call_with_arg(). These functions a central to communicating with OP-TEE in secure world by using the SMC Calling Convention directly. This refactoring makes room for using other primitives to communicate with OP-TEE in secure world while being able to reuse as much as possible from the present driver. Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-10-15optee: simplify optee_release()Jens Wiklander1-12/+19
Simplifies optee_release() with a new helper function, optee_close_session_helper() which has been factored out from optee_close_session(). A separate optee_release_supp() is added for the supplicant device. Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-07-21tee: Correct inappropriate usage of TEE_SHM_DMA_BUF flagSumit Garg1-1/+1
Currently TEE_SHM_DMA_BUF flag has been inappropriately used to not register shared memory allocated for private usage by underlying TEE driver: OP-TEE in this case. So rather add a new flag as TEE_SHM_PRIV that can be utilized by underlying TEE drivers for private allocation and usage of shared memory. With this corrected, allow tee_shm_alloc_kernel_buf() to allocate a shared memory region without the backing of dma-buf. Cc: stable@vger.kernel.org Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Co-developed-by: Tyler Hicks <tyhicks@linux.microsoft.com> Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-07-21optee: Clear stale cache entries during initializationTyler Hicks1-3/+33
The shm cache could contain invalid addresses if optee_disable_shm_cache() was not called from the .shutdown hook of the previous kernel before a kexec. These addresses could be unmapped or they could point to mapped but unintended locations in memory. Clear the shared memory cache, while being careful to not translate the addresses returned from OPTEE_SMC_DISABLE_SHM_CACHE, during driver initialization. Once all pre-cache shm objects are removed, proceed with enabling the cache so that we know that we can handle cached shm objects with confidence later in the .shutdown hook. Cc: stable@vger.kernel.org Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-05-18optee: use export_uuid() to copy client UUIDJens Wiklander1-2/+4
Prior to this patch optee_open_session() was making assumptions about the internal format of uuid_t by casting a memory location in a parameter struct to uuid_t *. Fix this using export_uuid() to get a well defined binary representation and also add an octets field in struct optee_msg_param in order to avoid casting. Fixes: c5b4312bea5d ("tee: optee: Add support for session login client UUID generation") Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-03-15tee: optee: add invoke_fn tracepointsJisheng Zhang1-0/+4
Add tracepoints to retrieve information about the invoke_fn. This would help to measure how many invoke_fn are triggered and how long it takes to complete one invoke_fn call. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-02-03tee: optee: remove need_resched() before cond_resched()Jens Wiklander1-2/+1
Testing need_resched() before cond_resched() is not needed as an equivalent test is done internally in cond_resched(). So drop the need_resched() test. Fixes: dcb3b06d9c34 ("tee: optee: replace might_sleep with cond_resched") Reviewed-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Tested-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Tested-by: Sumit Garg <sumit.garg@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-01-21tee: optee: replace might_sleep with cond_reschedRouven Czerwinski1-1/+3
might_sleep() is a debugging aid and triggers rescheduling only for certain kernel configurations. Replace with an explicit check and reschedule to work for all kernel configurations. Fixes the following trace: [ 572.945146] rcu: INFO: rcu_sched self-detected stall on CPU [ 572.949275] rcu: 0-....: (2099 ticks this GP) idle=572/1/0x40000002 softirq=7412/7412 fqs=974 [ 572.957964] (t=2100 jiffies g=10393 q=21) [ 572.962054] NMI backtrace for cpu 0 [ 572.965540] CPU: 0 PID: 165 Comm: xtest Not tainted 5.8.7 #1 [ 572.971188] Hardware name: STM32 (Device Tree Support) [ 572.976354] [<c011163c>] (unwind_backtrace) from [<c010b7f8>] (show_stack+0x10/0x14) [ 572.984080] [<c010b7f8>] (show_stack) from [<c0511e4c>] (dump_stack+0xc4/0xd8) [ 572.991300] [<c0511e4c>] (dump_stack) from [<c0519abc>] (nmi_cpu_backtrace+0x90/0xc4) [ 572.999130] [<c0519abc>] (nmi_cpu_backtrace) from [<c0519bdc>] (nmi_trigger_cpumask_backtrace+0xec/0x130) [ 573.008706] [<c0519bdc>] (nmi_trigger_cpumask_backtrace) from [<c01a5184>] (rcu_dump_cpu_stacks+0xe8/0x110) [ 573.018453] [<c01a5184>] (rcu_dump_cpu_stacks) from [<c01a4234>] (rcu_sched_clock_irq+0x7fc/0xa88) [ 573.027416] [<c01a4234>] (rcu_sched_clock_irq) from [<c01acdd0>] (update_process_times+0x30/0x8c) [ 573.036291] [<c01acdd0>] (update_process_times) from [<c01bfb90>] (tick_sched_timer+0x4c/0xa8) [ 573.044905] [<c01bfb90>] (tick_sched_timer) from [<c01adcc8>] (__hrtimer_run_queues+0x174/0x358) [ 573.053696] [<c01adcc8>] (__hrtimer_run_queues) from [<c01aea2c>] (hrtimer_interrupt+0x118/0x2bc) [ 573.062573] [<c01aea2c>] (hrtimer_interrupt) from [<c09ad664>] (arch_timer_handler_virt+0x28/0x30) [ 573.071536] [<c09ad664>] (arch_timer_handler_virt) from [<c0190f50>] (handle_percpu_devid_irq+0x8c/0x240) [ 573.081109] [<c0190f50>] (handle_percpu_devid_irq) from [<c018ab8c>] (generic_handle_irq+0x34/0x44) [ 573.090156] [<c018ab8c>] (generic_handle_irq) from [<c018b194>] (__handle_domain_irq+0x5c/0xb0) [ 573.098857] [<c018b194>] (__handle_domain_irq) from [<c052ac50>] (gic_handle_irq+0x4c/0x90) [ 573.107209] [<c052ac50>] (gic_handle_irq) from [<c0100b0c>] (__irq_svc+0x6c/0x90) [ 573.114682] Exception stack(0xd90dfcf8 to 0xd90dfd40) [ 573.119732] fce0: ffff0004 00000000 [ 573.127917] fd00: 00000000 00000000 00000000 00000000 00000000 00000000 d93493cc ffff0000 [ 573.136098] fd20: d2bc39c0 be926998 d90dfd58 d90dfd48 c09f3384 c01151f0 400d0013 ffffffff [ 573.144281] [<c0100b0c>] (__irq_svc) from [<c01151f0>] (__arm_smccc_smc+0x10/0x20) [ 573.151854] [<c01151f0>] (__arm_smccc_smc) from [<c09f3384>] (optee_smccc_smc+0x3c/0x44) [ 573.159948] [<c09f3384>] (optee_smccc_smc) from [<c09f4170>] (optee_do_call_with_arg+0xb8/0x154) [ 573.168735] [<c09f4170>] (optee_do_call_with_arg) from [<c09f4638>] (optee_invoke_func+0x110/0x190) [ 573.177786] [<c09f4638>] (optee_invoke_func) from [<c09f1ebc>] (tee_ioctl+0x10b8/0x11c0) [ 573.185879] [<c09f1ebc>] (tee_ioctl) from [<c029f62c>] (ksys_ioctl+0xe0/0xa4c) [ 573.193101] [<c029f62c>] (ksys_ioctl) from [<c0100060>] (ret_fast_syscall+0x0/0x54) [ 573.200750] Exception stack(0xd90dffa8 to 0xd90dfff0) [ 573.205803] ffa0: be926bf4 be926a78 00000003 8010a403 be926908 004e3cf8 [ 573.213987] ffc0: be926bf4 be926a78 00000000 00000036 be926908 be926918 be9269b0 bffdf0f8 [ 573.222162] ffe0: b6d76fb0 be9268fc b6d66621 b6c7e0d8 seen on STM32 DK2 with CONFIG_PREEMPT_NONE. Fixes: 9f02b8f61f29 ("tee: optee: add might_sleep for RPC requests") Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Tested-by: Sumit Garg <sumit.garg@linaro.org> [jw: added fixes tag + small adjustments in the code] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2020-11-25optee: add writeback to valid memory typeRui Miguel Silva1-1/+2
Only in smp systems the cache policy is setup as write alloc, in single cpu systems the cache policy is set as writeback and it is normal memory, so, it should pass the is_normal_memory check in the share memory registration. Add the right condition to make it work in no smp systems. Fixes: cdbcf83d29c1 ("tee: optee: check type of registered shared memory") Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2020-06-09mmap locking API: use coccinelle to convert mmap_sem rwsem call sitesMichel Lespinasse1-2/+2
This change converts the existing mmap_sem rwsem calls to use the new mmap locking API instead. The change is generated using coccinelle with the following rule: // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir . @@ expression mm; @@ ( -init_rwsem +mmap_init_lock | -down_write +mmap_write_lock | -down_write_killable +mmap_write_lock_killable | -down_write_trylock +mmap_write_trylock | -up_write +mmap_write_unlock | -downgrade_write +mmap_write_downgrade | -down_read +mmap_read_lock | -down_read_killable +mmap_read_lock_killable | -down_read_trylock +mmap_read_trylock | -up_read +mmap_read_unlock ) -(&mm->mmap_sem) +(mm) Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-05-11tee: optee: Add support for session login client UUID generationVesa Jääskeläinen1-1/+5
Adds support for client UUID generation for OP-TEE. For group based session logins membership is verified. Signed-off-by: Vesa Jääskeläinen <vesa.jaaskelainen@vaisala.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2019-11-15tee: optee: Fix dynamic shm pool allocationsSumit Garg1-0/+7
In case of dynamic shared memory pool, kernel memory allocated using dmabuf_mgr pool needs to be registered with OP-TEE prior to its usage during optee_open_session() or optee_invoke_func(). So fix dmabuf_mgr pool allocations via an additional call to optee_shm_register(). Also, allow kernel pages to be registered as shared memory with OP-TEE. Fixes: 9733b072a12a ("optee: allow to work without static shared memory") Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2019-07-08tee: optee: add might_sleep for RPC requestsRouven Czerwinski1-0/+1
If the kernel is compiled with CONFIG_PREEMPT_VOLUNTARY and OP-TEE is executing a long running workload, the following errors are raised: [ 1705.971228] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 1705.977195] rcu: (detected by 0, t=2102 jiffies, g=51977, q=3) [ 1705.983152] rcu: All QSes seen, last rcu_sched kthread activity 2102 (140596-138494), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 1705.994729] optee-xtest R running task 0 169 157 0x00000002 While OP-TEE is returning regularly to the kernel due to timer interrupts, the OPTEE_SMC_FUNC_FOREIGN_INTR case does not contain an explicit rescheduling point. Add a might_sleep() to the RPC request case to ensure that the kernel can reschedule another task if OP-TEE requests RPC handling. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282Thomas Gleixner1-10/+1
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-12Merge tag 'tee-drv-dynamic-shm+fixes-for-v4.16' of ↵Olof Johansson1-4/+45
https://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers This pull request updates the previous tee-drv-dynamic-shm-for-v4.16 pull request with five new patches fixing review comments and errors. Apart from three small fixes there's two larger patches that in the end checks that memory to be registered really is normal cached memory. * tag 'tee-drv-dynamic-shm+fixes-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee: tee: shm: Potential NULL dereference calling tee_shm_register() tee: shm: don't put_page on null shm->pages tee: shm: make function __tee_shm_alloc static tee: optee: check type of registered shared memory tee: add start argument to shm_register callback Signed-off-by: Olof Johansson <olof@lixom.net>
2017-12-28tee: optee: check type of registered shared memoryJens Wiklander1-2/+42
Checks the memory type of the pages to be registered as shared memory. Only normal cached memory is allowed. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-12-28tee: add start argument to shm_register callbackJens Wiklander1-2/+4
Adds a start argument to the shm_register callback to allow the callback to check memory type of the passed pages. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-12-21tee: optee: fix header dependenciesArnd Bergmann1-1/+1
The optee driver includes the header files in an unusual order, with asm/pgtable.h before the linux/*.h headers. For some reason this seems to trigger a build failure: drivers/tee/optee/call.c: In function 'optee_fill_pages_list': include/asm-generic/memory_model.h:64:14: error: implicit declaration of function 'page_to_section'; did you mean '__nr_to_section'? [-Werror=implicit-function-declaration] int __sec = page_to_section(__pg); \ drivers/tee/optee/call.c:494:15: note: in expansion of macro 'page_to_phys' optee_page = page_to_phys(*pages) + Let's just include linux/mm.h, which will then get the other header implicitly. Fixes: 3bb48ba5cd60 ("tee: optee: add page list manipulation functions") Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-12-15tee: optee: add registered buffers handling into RPC callsVolodymyr Babchuk1-1/+18
With latest changes to OP-TEE we can use any buffers as a shared memory. Thus, it is possible for supplicant to provide part of own memory when OP-TEE asks to allocate a shared buffer. This patch adds support for such feature into RPC handling code. Now when OP-TEE asks supplicant to allocate shared buffer, supplicant can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is aware of this, so it will pass list of allocated pages to OP-TEE. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> [jw: fix parenthesis alignment in free_pages_list()] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-12-15tee: optee: add shared buffer registration functionsVolodymyr Babchuk1-0/+69
This change adds ops for shm_(un)register functions in tee interface. Client application can use these functions to (un)register an own shared buffer in OP-TEE address space. This allows zero copy data sharing between Normal and Secure Worlds. Please note that while those functions were added to optee code, it does not report to userspace that those functions are available. OP-TEE code does not set TEE_GEN_CAP_REG_MEM flag. This flag will be enabled only after all other features of dynamic shared memory will be implemented in subsequent patches. Of course user can ignore presence of TEE_GEN_CAP_REG_MEM flag and try do call those functions. This is okay, driver will register shared buffer in OP-TEE, but any attempts to use this shared buffer will fail. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-12-15tee: optee: add page list manipulation functionsVolodymyr Babchuk1-0/+91
These functions will be used to pass information about shared buffers to OP-TEE. ABI between Linux and OP-TEE is defined in optee_msg.h and optee_smc.h. optee_msg.h defines OPTEE_MSG_ATTR_NONCONTIG attribute for shared memory references and describes how such references should be passed. Note that it uses 64-bit page addresses even on 32 bit systems. This is done to support LPAE and to unify interface. Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> [jw: replacing uint64_t with u64 in optee_fill_pages_list()] Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-03-10tee: add OP-TEE driverJens Wiklander1-0/+444
Adds a OP-TEE driver which also can be compiled as a loadable module. * Targets ARM and ARM64 * Supports using reserved memory from OP-TEE as shared memory * Probes OP-TEE version using SMCs * Accepts requests on privileged and unprivileged device * Uses OPTEE message protocol version 2 to communicate with secure world Acked-by: Andreas Dannenberg <dannenberg@ti.com> Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (HiKey) Tested-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> (RCAR H3) Tested-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Javier González <javier@javigon.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-28 21:50:56 +0300