forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
202 lines
6.1 KiB
202 lines
6.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* Copyright (c) 2015, Linaro Limited |
|
*/ |
|
|
|
#ifndef OPTEE_PRIVATE_H |
|
#define OPTEE_PRIVATE_H |
|
|
|
#include <linux/arm-smccc.h> |
|
#include <linux/semaphore.h> |
|
#include <linux/tee_drv.h> |
|
#include <linux/types.h> |
|
#include "optee_msg.h" |
|
|
|
#define OPTEE_MAX_ARG_SIZE 1024 |
|
|
|
/* Some Global Platform error codes used in this driver */ |
|
#define TEEC_SUCCESS 0x00000000 |
|
#define TEEC_ERROR_BAD_PARAMETERS 0xFFFF0006 |
|
#define TEEC_ERROR_NOT_SUPPORTED 0xFFFF000A |
|
#define TEEC_ERROR_COMMUNICATION 0xFFFF000E |
|
#define TEEC_ERROR_OUT_OF_MEMORY 0xFFFF000C |
|
#define TEEC_ERROR_SHORT_BUFFER 0xFFFF0010 |
|
|
|
#define TEEC_ORIGIN_COMMS 0x00000002 |
|
|
|
typedef void (optee_invoke_fn)(unsigned long, unsigned long, unsigned long, |
|
unsigned long, unsigned long, unsigned long, |
|
unsigned long, unsigned long, |
|
struct arm_smccc_res *); |
|
|
|
struct optee_call_queue { |
|
/* Serializes access to this struct */ |
|
struct mutex mutex; |
|
struct list_head waiters; |
|
}; |
|
|
|
struct optee_wait_queue { |
|
/* Serializes access to this struct */ |
|
struct mutex mu; |
|
struct list_head db; |
|
}; |
|
|
|
/** |
|
* struct optee_supp - supplicant synchronization struct |
|
* @ctx the context of current connected supplicant. |
|
* if !NULL the supplicant device is available for use, |
|
* else busy |
|
* @mutex: held while accessing content of this struct |
|
* @req_id: current request id if supplicant is doing synchronous |
|
* communication, else -1 |
|
* @reqs: queued request not yet retrieved by supplicant |
|
* @idr: IDR holding all requests currently being processed |
|
* by supplicant |
|
* @reqs_c: completion used by supplicant when waiting for a |
|
* request to be queued. |
|
*/ |
|
struct optee_supp { |
|
/* Serializes access to this struct */ |
|
struct mutex mutex; |
|
struct tee_context *ctx; |
|
|
|
int req_id; |
|
struct list_head reqs; |
|
struct idr idr; |
|
struct completion reqs_c; |
|
}; |
|
|
|
/** |
|
* struct optee - main service struct |
|
* @supp_teedev: supplicant device |
|
* @teedev: client device |
|
* @invoke_fn: function to issue smc or hvc |
|
* @call_queue: queue of threads waiting to call @invoke_fn |
|
* @wait_queue: queue of threads from secure world waiting for a |
|
* secure world sync object |
|
* @supp: supplicant synchronization struct for RPC to supplicant |
|
* @pool: shared memory pool |
|
* @memremaped_shm virtual address of memory in shared memory pool |
|
* @sec_caps: secure world capabilities defined by |
|
* OPTEE_SMC_SEC_CAP_* in optee_smc.h |
|
* @scan_bus_done flag if device registation was already done. |
|
* @scan_bus_wq workqueue to scan optee bus and register optee drivers |
|
* @scan_bus_work workq to scan optee bus and register optee drivers |
|
*/ |
|
struct optee { |
|
struct tee_device *supp_teedev; |
|
struct tee_device *teedev; |
|
optee_invoke_fn *invoke_fn; |
|
struct optee_call_queue call_queue; |
|
struct optee_wait_queue wait_queue; |
|
struct optee_supp supp; |
|
struct tee_shm_pool *pool; |
|
void *memremaped_shm; |
|
u32 sec_caps; |
|
bool scan_bus_done; |
|
struct workqueue_struct *scan_bus_wq; |
|
struct work_struct scan_bus_work; |
|
}; |
|
|
|
struct optee_session { |
|
struct list_head list_node; |
|
u32 session_id; |
|
}; |
|
|
|
struct optee_context_data { |
|
/* Serializes access to this struct */ |
|
struct mutex mutex; |
|
struct list_head sess_list; |
|
}; |
|
|
|
struct optee_rpc_param { |
|
u32 a0; |
|
u32 a1; |
|
u32 a2; |
|
u32 a3; |
|
u32 a4; |
|
u32 a5; |
|
u32 a6; |
|
u32 a7; |
|
}; |
|
|
|
/* Holds context that is preserved during one STD call */ |
|
struct optee_call_ctx { |
|
/* information about pages list used in last allocation */ |
|
void *pages_list; |
|
size_t num_entries; |
|
}; |
|
|
|
void optee_handle_rpc(struct tee_context *ctx, struct optee_rpc_param *param, |
|
struct optee_call_ctx *call_ctx); |
|
void optee_rpc_finalize_call(struct optee_call_ctx *call_ctx); |
|
|
|
void optee_wait_queue_init(struct optee_wait_queue *wq); |
|
void optee_wait_queue_exit(struct optee_wait_queue *wq); |
|
|
|
u32 optee_supp_thrd_req(struct tee_context *ctx, u32 func, size_t num_params, |
|
struct tee_param *param); |
|
|
|
int optee_supp_read(struct tee_context *ctx, void __user *buf, size_t len); |
|
int optee_supp_write(struct tee_context *ctx, void __user *buf, size_t len); |
|
void optee_supp_init(struct optee_supp *supp); |
|
void optee_supp_uninit(struct optee_supp *supp); |
|
void optee_supp_release(struct optee_supp *supp); |
|
|
|
int optee_supp_recv(struct tee_context *ctx, u32 *func, u32 *num_params, |
|
struct tee_param *param); |
|
int optee_supp_send(struct tee_context *ctx, u32 ret, u32 num_params, |
|
struct tee_param *param); |
|
|
|
u32 optee_do_call_with_arg(struct tee_context *ctx, phys_addr_t parg); |
|
int optee_open_session(struct tee_context *ctx, |
|
struct tee_ioctl_open_session_arg *arg, |
|
struct tee_param *param); |
|
int optee_close_session(struct tee_context *ctx, u32 session); |
|
int optee_invoke_func(struct tee_context *ctx, struct tee_ioctl_invoke_arg *arg, |
|
struct tee_param *param); |
|
int optee_cancel_req(struct tee_context *ctx, u32 cancel_id, u32 session); |
|
|
|
void optee_enable_shm_cache(struct optee *optee); |
|
void optee_disable_shm_cache(struct optee *optee); |
|
|
|
int optee_shm_register(struct tee_context *ctx, struct tee_shm *shm, |
|
struct page **pages, size_t num_pages, |
|
unsigned long start); |
|
int optee_shm_unregister(struct tee_context *ctx, struct tee_shm *shm); |
|
|
|
int optee_shm_register_supp(struct tee_context *ctx, struct tee_shm *shm, |
|
struct page **pages, size_t num_pages, |
|
unsigned long start); |
|
int optee_shm_unregister_supp(struct tee_context *ctx, struct tee_shm *shm); |
|
|
|
int optee_from_msg_param(struct tee_param *params, size_t num_params, |
|
const struct optee_msg_param *msg_params); |
|
int optee_to_msg_param(struct optee_msg_param *msg_params, size_t num_params, |
|
const struct tee_param *params); |
|
|
|
u64 *optee_allocate_pages_list(size_t num_entries); |
|
void optee_free_pages_list(void *array, size_t num_entries); |
|
void optee_fill_pages_list(u64 *dst, struct page **pages, int num_pages, |
|
size_t page_offset); |
|
|
|
#define PTA_CMD_GET_DEVICES 0x0 |
|
#define PTA_CMD_GET_DEVICES_SUPP 0x1 |
|
int optee_enumerate_devices(u32 func); |
|
|
|
/* |
|
* Small helpers |
|
*/ |
|
|
|
static inline void *reg_pair_to_ptr(u32 reg0, u32 reg1) |
|
{ |
|
return (void *)(unsigned long)(((u64)reg0 << 32) | reg1); |
|
} |
|
|
|
static inline void reg_pair_from_64(u32 *reg0, u32 *reg1, u64 val) |
|
{ |
|
*reg0 = val >> 32; |
|
*reg1 = val; |
|
} |
|
|
|
#endif /*OPTEE_PRIVATE_H*/
|
|
|