![Olof Johansson](/assets/img/avatar_default.png)
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. -----BEGIN PGP SIGNATURE----- iQI3BAABCgAhBQJaVzZeGhxqZW5zLndpa2xhbmRlckBsaW5hcm8ub3JnAAoJELWw uEGXj+zTbVMQAOK22g34O1EouTBpFvw/Ch4aZ7AFr+NoXxyphhIeg/4RpWwCpiCY +xDBv4aHk6Opv0uhWGJJHMzRgE6eNYjLVVd8tGpDtRdqQWJP0MYVH2sHu5bnfJZS LfDUk+t2ULxgzVvIBvyccslTSAGqc5K0mnzW3DXrwkKtRmpfl27tg/OFph08lHni dhAOeW4m6PGWcWlQklDlpykTt8KUHMaIx5eNx+IBCYDcfQkev3Te49EwDK05ObjU MC6M1rZJmzb28UumkUC1B8nyS/PqxB8xrkyqYqehic6eBH9WIAn+paaLgSjocvqc gXwScaTNyniUPBMR73sNyARzpYgI0CvcqJ9R0uIGlSmwj9LQqrc0vtiJAR0YDeir FzweH8uhkU2qhZjH3WSoLGS4CSm2scIhEE3jbHpRjDdqvajoQBbOxPKusQnIjs/p iDZwYKuvH2f7TQtdwigT36k7KP0688LRSUrp7CeY7sIlzj0M3CLEzU/5OORBgqIl 5KyOt6R8aVbQtABDBnzqIn1BYqA05KWzZFqwlDPckCNfBjgHd45rz4HGvwqCf9JI dKZ3VZDtBOeQIpBRj02mbEn0mUhDyztd7we+WkzTz0AxmEAw8r8yn1035WhZILGw ntXMk4PX9uVwQxReE0n1Gyv5UxCP1u+RMGE7G3hQoDBGNdhGxHw9bDqV =0+NS -----END PGP SIGNATURE----- Merge tag 'tee-drv-dynamic-shm+fixes-for-v4.16' of 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>
200 lines
6 KiB
C
200 lines
6 KiB
C
/*
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* Copyright (c) 2015, Linaro Limited
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef OPTEE_PRIVATE_H
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#define OPTEE_PRIVATE_H
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#include <linux/arm-smccc.h>
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#include <linux/semaphore.h>
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#include <linux/tee_drv.h>
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#include <linux/types.h>
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#include "optee_msg.h"
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#define OPTEE_MAX_ARG_SIZE 1024
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/* Some Global Platform error codes used in this driver */
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#define TEEC_SUCCESS 0x00000000
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#define TEEC_ERROR_BAD_PARAMETERS 0xFFFF0006
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#define TEEC_ERROR_COMMUNICATION 0xFFFF000E
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#define TEEC_ERROR_OUT_OF_MEMORY 0xFFFF000C
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#define TEEC_ORIGIN_COMMS 0x00000002
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typedef void (optee_invoke_fn)(unsigned long, unsigned long, unsigned long,
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unsigned long, unsigned long, unsigned long,
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unsigned long, unsigned long,
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struct arm_smccc_res *);
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struct optee_call_queue {
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/* Serializes access to this struct */
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struct mutex mutex;
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struct list_head waiters;
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};
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struct optee_wait_queue {
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/* Serializes access to this struct */
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struct mutex mu;
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struct list_head db;
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};
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/**
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* struct optee_supp - supplicant synchronization struct
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* @ctx the context of current connected supplicant.
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* if !NULL the supplicant device is available for use,
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* else busy
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* @mutex: held while accessing content of this struct
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* @req_id: current request id if supplicant is doing synchronous
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* communication, else -1
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* @reqs: queued request not yet retrieved by supplicant
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* @idr: IDR holding all requests currently being processed
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* by supplicant
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* @reqs_c: completion used by supplicant when waiting for a
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* request to be queued.
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*/
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struct optee_supp {
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/* Serializes access to this struct */
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struct mutex mutex;
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struct tee_context *ctx;
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int req_id;
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struct list_head reqs;
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struct idr idr;
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struct completion reqs_c;
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};
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/**
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* struct optee - main service struct
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* @supp_teedev: supplicant device
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* @teedev: client device
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* @invoke_fn: function to issue smc or hvc
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* @call_queue: queue of threads waiting to call @invoke_fn
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* @wait_queue: queue of threads from secure world waiting for a
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* secure world sync object
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* @supp: supplicant synchronization struct for RPC to supplicant
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* @pool: shared memory pool
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* @memremaped_shm virtual address of memory in shared memory pool
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* @sec_caps: secure world capabilities defined by
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* OPTEE_SMC_SEC_CAP_* in optee_smc.h
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*/
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struct optee {
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struct tee_device *supp_teedev;
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struct tee_device *teedev;
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optee_invoke_fn *invoke_fn;
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struct optee_call_queue call_queue;
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struct optee_wait_queue wait_queue;
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struct optee_supp supp;
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struct tee_shm_pool *pool;
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void *memremaped_shm;
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u32 sec_caps;
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};
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struct optee_session {
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struct list_head list_node;
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u32 session_id;
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};
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struct optee_context_data {
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/* Serializes access to this struct */
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struct mutex mutex;
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struct list_head sess_list;
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};
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struct optee_rpc_param {
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u32 a0;
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u32 a1;
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u32 a2;
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u32 a3;
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u32 a4;
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u32 a5;
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u32 a6;
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u32 a7;
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};
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/* Holds context that is preserved during one STD call */
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struct optee_call_ctx {
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/* information about pages list used in last allocation */
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void *pages_list;
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size_t num_entries;
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};
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void optee_handle_rpc(struct tee_context *ctx, struct optee_rpc_param *param,
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struct optee_call_ctx *call_ctx);
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void optee_rpc_finalize_call(struct optee_call_ctx *call_ctx);
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void optee_wait_queue_init(struct optee_wait_queue *wq);
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void optee_wait_queue_exit(struct optee_wait_queue *wq);
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u32 optee_supp_thrd_req(struct tee_context *ctx, u32 func, size_t num_params,
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struct tee_param *param);
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int optee_supp_read(struct tee_context *ctx, void __user *buf, size_t len);
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int optee_supp_write(struct tee_context *ctx, void __user *buf, size_t len);
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void optee_supp_init(struct optee_supp *supp);
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void optee_supp_uninit(struct optee_supp *supp);
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void optee_supp_release(struct optee_supp *supp);
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int optee_supp_recv(struct tee_context *ctx, u32 *func, u32 *num_params,
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struct tee_param *param);
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int optee_supp_send(struct tee_context *ctx, u32 ret, u32 num_params,
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struct tee_param *param);
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u32 optee_do_call_with_arg(struct tee_context *ctx, phys_addr_t parg);
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int optee_open_session(struct tee_context *ctx,
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struct tee_ioctl_open_session_arg *arg,
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struct tee_param *param);
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int optee_close_session(struct tee_context *ctx, u32 session);
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int optee_invoke_func(struct tee_context *ctx, struct tee_ioctl_invoke_arg *arg,
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struct tee_param *param);
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int optee_cancel_req(struct tee_context *ctx, u32 cancel_id, u32 session);
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void optee_enable_shm_cache(struct optee *optee);
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void optee_disable_shm_cache(struct optee *optee);
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int optee_shm_register(struct tee_context *ctx, struct tee_shm *shm,
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struct page **pages, size_t num_pages,
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unsigned long start);
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int optee_shm_unregister(struct tee_context *ctx, struct tee_shm *shm);
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int optee_shm_register_supp(struct tee_context *ctx, struct tee_shm *shm,
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struct page **pages, size_t num_pages,
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unsigned long start);
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int optee_shm_unregister_supp(struct tee_context *ctx, struct tee_shm *shm);
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int optee_from_msg_param(struct tee_param *params, size_t num_params,
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const struct optee_msg_param *msg_params);
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int optee_to_msg_param(struct optee_msg_param *msg_params, size_t num_params,
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const struct tee_param *params);
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u64 *optee_allocate_pages_list(size_t num_entries);
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void optee_free_pages_list(void *array, size_t num_entries);
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void optee_fill_pages_list(u64 *dst, struct page **pages, int num_pages,
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size_t page_offset);
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/*
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* Small helpers
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*/
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static inline void *reg_pair_to_ptr(u32 reg0, u32 reg1)
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{
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return (void *)(unsigned long)(((u64)reg0 << 32) | reg1);
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}
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static inline void reg_pair_from_64(u32 *reg0, u32 *reg1, u64 val)
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{
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*reg0 = val >> 32;
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*reg1 = val;
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}
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#endif /*OPTEE_PRIVATE_H*/
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