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/*
* Copyright (c) 2014, STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TEE_MMU_H
#define TEE_MMU_H
#include <tee_api_types.h>
#include <kernel/tee_ta_manager.h>
#include <kernel/user_ta.h>
/*-----------------------------------------------------------------------------
* Allocate context resources like ASID and MMU table information
*---------------------------------------------------------------------------*/
TEE_Result tee_mmu_init(struct user_ta_ctx *utc);
/*-----------------------------------------------------------------------------
* tee_mmu_final - Release context resources like ASID
*---------------------------------------------------------------------------*/
void tee_mmu_final(struct user_ta_ctx *utc);
/* Map stack of a user TA. */
void tee_mmu_map_stack(struct user_ta_ctx *utc, struct mobj *mobj);
/*
* Map a code segment of a user TA, this function may be called multiple
* times if there's several segments.
*/
TEE_Result tee_mmu_map_add_segment(struct user_ta_ctx *utc, struct mobj *mobj,
size_t offs, size_t size, uint32_t prot);
void tee_mmu_map_clear(struct user_ta_ctx *utc);
/* Map parameters for a user TA */
TEE_Result tee_mmu_map_param(struct user_ta_ctx *utc,
struct tee_ta_param *param, void *param_va[TEE_NUM_PARAMS]);
/*
* If the rwmem area covers more than one page directory @pgdir_offset has
* to be honoured unless it's -1.
*/
TEE_Result tee_mmu_add_rwmem(struct user_ta_ctx *utc, struct mobj *mobj,
int pgdir_offset, vaddr_t *va);
void tee_mmu_rem_rwmem(struct user_ta_ctx *utc, struct mobj *mobj, vaddr_t va);
/*
* TA private memory is defined as TA image static segment (code, ro/rw static
* data, heap, stack). The sole other virtual memory mapped to TA are memref
* parameters. These later are considered outside TA private memory as it
* might be accessed by the TA and its client(s).
*/
bool tee_mmu_is_vbuf_inside_ta_private(const struct user_ta_ctx *utc,
const void *va, size_t size);
bool tee_mmu_is_vbuf_intersect_ta_private(const struct user_ta_ctx *utc,
const void *va, size_t size);
TEE_Result tee_mmu_vbuf_to_mobj_offs(const struct user_ta_ctx *utc,
const void *va, size_t size,
struct mobj **mobj, size_t *offs);
/*-----------------------------------------------------------------------------
* tee_mmu_user_va2pa - Translate virtual user address to physical address
* given the user context.
* Interface is deprecated, use virt_to_phys() instead.
*---------------------------------------------------------------------------*/
TEE_Result tee_mmu_user_va2pa_helper(const struct user_ta_ctx *utc, void *ua,
paddr_t *pa);
/*-----------------------------------------------------------------------------
* tee_mmu_user_va2pa - Translate physical address to virtual user address
* given the user context.
* Interface is deprecated, use phys_to_virt() instead.
*---------------------------------------------------------------------------*/
TEE_Result tee_mmu_user_pa2va_helper(const struct user_ta_ctx *utc,
paddr_t pa, void **va);
/*-----------------------------------------------------------------------------
* tee_mmu_check_access_rights -
*---------------------------------------------------------------------------*/
TEE_Result tee_mmu_check_access_rights(const struct user_ta_ctx *utc,
uint32_t flags, uaddr_t uaddr,
size_t len);
/*-----------------------------------------------------------------------------
* If ctx is NULL user mapping is removed and ASID set to 0
*---------------------------------------------------------------------------*/
void tee_mmu_set_ctx(struct tee_ta_ctx *ctx);
struct tee_ta_ctx *tee_mmu_get_ctx(void);
/* Returns virtual address to which TA is loaded */
uintptr_t tee_mmu_get_load_addr(const struct tee_ta_ctx *const ctx);
/* init some allocation pools */
void teecore_init_ta_ram(void);
void teecore_init_pub_ram(void);
uint32_t tee_mmu_user_get_cache_attr(struct user_ta_ctx *utc, void *va);
TEE_Result tee_mmu_register_shm(paddr_t pa, size_t len, uint32_t attr);
#endif
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