kernel_samsung_a34x-permissive/drivers/misc/mediatek/cmdq/v2/cmdq_sec.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2015 MediaTek Inc.
 */

#ifndef __CMDQ_SEC_H__
#define __CMDQ_SEC_H__

#include "cmdq_core.h"

#ifndef CONFIG_MTK_CMDQ_TAB
#if defined(CMDQ_SECURE_PATH_SUPPORT)
#include "mobicore_driver_api.h"
#include "cmdq_sec_iwc_common.h"
#endif
#else
#include "cmdq_sec_iwc_common.h"
#ifdef CMDQ_SECURE_PATH_SUPPORT
#include "trustzone/kree/system.h"
#include "trustzone/kree/mem.h"
#endif
#endif

/**
 * error code for CMDQ
 */

#define CMDQ_ERR_NULL_SEC_CTX_HANDLE (6000)
#define CMDQ_ERR_SEC_CTX_SETUP (6001)
#define CMDQ_ERR_SEC_CTX_TEARDOWN (6002)

/**
 * inter-world communication state
 */
enum CMDQ_IWC_STATE_ENUM {
	IWC_INIT = 0,
	IWC_MOBICORE_OPENED = 1,
	IWC_WSM_ALLOCATED = 2,
	IWC_SES_OPENED = 3,
	IWC_SES_MSG_PACKAGED = 4,
	IWC_SES_TRANSACTED = 5,
	IWC_SES_ON_TRANSACTED = 6,
	IWC_END_OF_ENUM = 7,
};


/**
 * CMDQ secure context struct
 * note it is not global data, each process has its own CMDQ sec context
 */
struct cmdqSecContextStruct {
	struct list_head listEntry;

	/* basic info */
	uint32_t tgid;		/* tgid of process context */
	uint32_t referCount;	/* reference count for open cmdq device node */

	/* iwc state */
	enum CMDQ_IWC_STATE_ENUM state;

	/* iwc information */
	void *iwcMessage;	/* message buffer */
#ifndef CONFIG_MTK_CMDQ_TAB
#if defined(CMDQ_SECURE_PATH_SUPPORT)
	/* Universally Unique Identifier of secure tl/dr */
	struct mc_uuid_t uuid;
	struct mc_session_handle sessionHandle;	/* session handle */
#endif
	/* true if someone has opened mobicore */
	/* device in this prpocess context */
	uint32_t openMobicoreByOther;
#else
#if defined(CMDQ_SECURE_PATH_SUPPORT)
	KREE_SESSION_HANDLE sessionHandle;
	KREE_SESSION_HANDLE memSessionHandle;
#endif
#endif
};

int32_t cmdq_sec_init_allocate_resource_thread(void *data);

/**
 * Create and destroy non-cachable shared memory,
 * used to share data for CMDQ driver between NWd and SWd
 *
 * Be careful that we should not disvlose
 * any information about secure buffer address of
 */
int32_t cmdq_sec_create_shared_memory(
	struct cmdqSecSharedMemoryStruct **pHandle,
	const uint32_t size);
int32_t cmdq_sec_destroy_shared_memory(
	struct cmdqSecSharedMemoryStruct *handle);

/**
 * Callback to fill message buffer for secure task
 *
 * Params:
 *     init32_t command id
 *     void*	pornter of TaskStruct
 *     int32_t  CMDQ HW thread id
 *     void*    the inter-world communication buffer
 * Return:
 *     >=0 for success;
 */
#ifndef CONFIG_MTK_CMDQ_TAB
typedef int32_t(*CmdqSecFillIwcCB) (int32_t, void *, int32_t, void *);
#else
typedef int32_t(*CmdqSecFillIwcCB) (struct iwcCmdqMessage_t *_pIwc,
	uint32_t iwcCommand,
	struct TaskStruct *_pTask, int32_t thread);
#endif


/**
 * Entry secure world to handle secure path jobs
 * .submit task
 * .cancel error task
 */

int32_t cmdq_sec_exec_task_async_unlocked(
	struct TaskStruct *pTask, int32_t thread);
int32_t cmdq_sec_cancel_error_task_unlocked(
	struct TaskStruct *pTask, int32_t thread,
	struct cmdqSecCancelTaskResultStruct *pResult);
int32_t cmdq_sec_allocate_path_resource_unlocked(bool throwAEE);


/**
 * secure path control
 */
void cmdq_sec_lock_secure_path(void);
void cmdq_sec_unlock_secure_path(void);

void cmdqSecInitialize(void);
void cmdqSecDeInitialize(void);

void cmdqSecEnableProfile(const bool enable);

/* function declaretion */
struct cmdqSecContextStruct *cmdq_sec_context_handle_create(
	uint32_t tgid);



#ifdef CONFIG_MTK_CMDQ_TAB
int32_t cmdq_sec_submit_to_secure_world_async_unlocked(
	uint32_t iwcCommand,
	struct TaskStruct *pTask,
	int32_t thread,
	CmdqSecFillIwcCB iwcFillCB, void *data, bool throwAEE);
struct cmdqSecContextStruct *cmdq_sec_acquire_context_handle(
	uint32_t tgid);
int32_t cmdq_sec_release_context_handle(uint32_t tgid);
void cmdq_sec_dump_context_list(void);

int cmdq_sec_init_secure_path(void *data);

void cmdq_sec_set_commandId(uint32_t cmdId);
const uint32_t cmdq_sec_get_commandId(void);
int32_t cmdq_sec_init_share_memory(void);
void cmdq_debug_set_sw_copy(int32_t value);
int32_t cmdq_debug_get_sw_copy(void);
void cmdq_sec_set_sec_print_count(uint32_t count, bool bPrint);
uint32_t cmdq_sec_get_sec_print_count(void);
int32_t cmdq_sec_get_log_level(void);

/* add for universal communicate with TEE */
struct transmitBufferStruct {
	void *pBuffer;		/* the share memory */
	uint32_t size;		/* share memory size */
#ifdef CMDQ_SECURE_PATH_SUPPORT
	KREE_SHAREDMEM_HANDLE shareMemHandle;
	KREE_SESSION_HANDLE cmdqHandle;
	KREE_SESSION_HANDLE memSessionHandle;
#endif
};


#if defined(CMDQ_SECURE_PATH_SUPPORT)
/* the session to communicate with TA */
KREE_SESSION_HANDLE cmdq_session_handle(void);
KREE_SESSION_HANDLE cmdq_mem_session_handle(void);
int32_t cmdq_sec_create_shared_memory(
	struct cmdqSecSharedMemoryStruct **pHandle,
	const uint32_t size);
int32_t cmdq_sec_destroy_shared_memory(
	struct cmdqSecSharedMemoryStruct *handle);





int32_t cmdqSecRegisterSecureBuffer(
	struct transmitBufferStruct *pSecureData);
int32_t cmdqSecServiceCall(
	struct transmitBufferStruct *pSecureData, int32_t cmd);
int32_t cmdqSecUnRegisterSecureBuffer(
	struct transmitBufferStruct *pSecureData);
void cmdq_sec_register_secure_irq(void);
#endif


#endif

#endif				/* __DDP_CMDQ_SEC_H__ */