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/*
* Copyright (c) 2016, Linaro Limited
* 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 CORE_MEMPROT_H
#define CORE_MEMPROT_H
#include <mm/core_mmu.h>
#include <types_ext.h>
/*
* "pbuf_is" support.
*
* core_vbuf_is()/core_pbuf_is() can be used to check if a teecore mapped
* virtual address or a physical address is "Secure", "Unsecure", "external
* RAM" and some other fancy attributes.
*
* DO NOT use 'buf_is(Secure, buffer)==false' as a assumption that buffer is
* UnSecured ! This is NOT a valid asumption ! A buffer is certified UnSecured
* only if 'buf_is(UnSecure, buffer)==true'.
*/
/* memory atttributes */
enum buf_is_attr {
CORE_MEM_SEC,
CORE_MEM_NON_SEC,
CORE_MEM_TEE_RAM,
CORE_MEM_TA_RAM,
CORE_MEM_NSEC_SHM,
CORE_MEM_EXTRAM,
CORE_MEM_INTRAM,
CORE_MEM_CACHED,
};
/* redirect legacy tee_vbuf_is() and tee_pbuf_is() to our routines */
#define tee_pbuf_is core_pbuf_is
#define tee_vbuf_is core_vbuf_is
/* Convenience macros */
#define tee_pbuf_is_non_sec(buf, len) \
core_pbuf_is(CORE_MEM_NON_SEC, (paddr_t)(buf), (len))
#define tee_pbuf_is_sec(buf, len) \
core_pbuf_is(CORE_MEM_SEC, (paddr_t)(buf), (len))
#define tee_vbuf_is_non_sec(buf, len) \
core_vbuf_is(CORE_MEM_NON_SEC, (void *)(buf), (len))
#define tee_vbuf_is_sec(buf, len) \
core_vbuf_is(CORE_MEM_SEC, (void *)(buf), (len))
/*
* This function return true if the buf complies with supplied flags.
* If this function returns false buf doesn't comply with supplied flags
* or something went wrong.
*
* Note that returning false doesn't guarantee that buf complies with
* the complement of the supplied flags.
*/
bool core_pbuf_is(uint32_t flags, paddr_t pbuf, size_t len);
/*
* Translates the supplied virtual address to a physical address and uses
* tee_phys_buf_is() to check the compliance of the buffer.
*/
bool core_vbuf_is(uint32_t flags, const void *vbuf, size_t len);
/*
* Translate physical address to virtual address using specified mapping
* Returns NULL on failure or a valid virtual address on success.
*/
void *phys_to_virt(paddr_t pa, enum teecore_memtypes m);
/*
* Translate virtual address to physical address
* Returns 0 on failure or a valid physical address on success.
*/
paddr_t virt_to_phys(void *va);
#endif /* CORE_MEMPROT_H */
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