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include/nuttx/arch.h: Add architecture-specific prototypes for conversions between physical and virtual address.

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ligd 2018-08-24 08:40:45 -06:00 committed by Gregory Nutt
parent 430bf16f1e
commit fb90f821fb
1 changed files with 39 additions and 0 deletions
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39
include/nuttx/arch.h
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@ -834,6 +834,7 @@ void up_sched_garbage_collection(void);
* up_addrenv_kstackfree - Destroy the kernel stack.
*
****************************************************************************/
/****************************************************************************
* Name: up_addrenv_create
*
@ -1238,6 +1239,44 @@ int up_addrenv_kstackalloc(FAR struct tcb_s *tcb);
int up_addrenv_kstackfree(FAR struct tcb_s *tcb);
#endif
/****************************************************************************
* Name: up_addrenv_pa_to_va
*
* Description:
* Map phy address to virtual address. Not supported by all architectures.
*
* REVISIT: Should this not then be conditional on having that
* architecture-specific support?
*
* Input Parameters:
* pa - The phy address to be mapped.
*
* Returned Value:
* Virtual address on success; NULL on failure.
*
****************************************************************************/
FAR void *up_addrenv_pa_to_va(uintptr_t pa);
/****************************************************************************
* Name: up_addrenv_va_to_pa
*
* Description:
* Map virtual address to phy address. Not supported by all architectures.
*
* REVISIT: Should this not then be conditional on having that
* architecture-specific support?
*
* Input Parameters:
* va - The virtual address to be mapped. Not supported by all architectures.
*
* Returned Value:
* Phy address on success; NULL on failure.
*
****************************************************************************/
uintptr_t up_addrenv_va_to_pa(FAR void *va);
/****************************************************************************
* Name: up_shmat
*