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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2016, Linaro Limited
* Copyright (c) 2014, STMicroelectronics International N.V.
*/
#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_CACHED,
CORE_MEM_NSEC_SHM,
CORE_MEM_NON_SEC,
CORE_MEM_SEC,
CORE_MEM_TEE_RAM,
CORE_MEM_TA_RAM,
CORE_MEM_SDP_MEM,
CORE_MEM_REG_SHM,
};
/* 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 physical address to virtual address trying MEM_AREA_IO_SEC
* first then MEM_AREA_IO_NSEC if not found.
* Returns NULL on failure or a valid virtual address on success.
*/
void *phys_to_virt_io(paddr_t pa);
/*
* Translate virtual address to physical address
* Returns 0 on failure or a valid physical address on success.
*/
paddr_t virt_to_phys(void *va);
/*
* Return runtime usable address, irrespective of whether
* the MMU is enabled or not.
*/
vaddr_t core_mmu_get_va(paddr_t pa, enum teecore_memtypes type);
/* Return true if @va relates to a unpaged section else false */
bool is_unpaged(void *va);
struct io_pa_va {
paddr_t pa;
vaddr_t va;
};
/*
* Helper function to return a physical or virtual address for a device,
* depending on whether the MMU is enabled or not
* io_pa_or_va() uses secure mapped IO memory if found or fallback to
* non-secure mapped IO memory.
*/
vaddr_t io_pa_or_va_secure(struct io_pa_va *p);
vaddr_t io_pa_or_va_nsec(struct io_pa_va *p);
vaddr_t io_pa_or_va(struct io_pa_va *p);
#endif /* CORE_MEMPROT_H */
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