3b6a63bb47
Move all of the virtual to physical translation functions into a single common file and use the updated constants. Signed-off-by: Curtis Millar <curtis.millar@data61.csiro.au>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
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* Copyright 2014, General Dynamics C4 Systems
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#pragma once
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#include <plat/machine.h>
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#include <machine/registerset.h>
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#include <hardware.h>
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/* When translating a physical address into an address accessible to the
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* kernel via virtual addressing we always use the mapping of the memory
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* into the physical memory window, even if the mapping originally
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* referred to a kernel virtual address. */
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static inline void *CONST ptrFromPAddr(paddr_t paddr)
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{
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return (void *)(paddr + PPTR_BASE_OFFSET);
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}
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/* When obtaining a physical address from a reference to any object in
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* the physical mapping window, this function must be used. */
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static inline paddr_t CONST addrFromPPtr(void *pptr)
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{
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return (paddr_t)pptr - PPTR_BASE_OFFSET;
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}
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/* When obtaining a physical address from a reference to an address from
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* the kernel ELF mapping, this function must be used. */
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static inline paddr_t CONST addrFromKPPtr(void *pptr)
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{
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assert((paddr_t)(pptr) >= KERNEL_ELF_BASE);
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assert((paddr_t)(pptr) <= KERNEL_ELF_TOP);
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return (paddr_t)pptr - KERNEL_ELF_BASE_OFFSET;
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}
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static inline region_t CONST paddr_to_pptr_reg(p_region_t p_reg)
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{
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return (region_t) {
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p_reg.start + PPTR_BASE_OFFSET, p_reg.end + PPTR_BASE_OFFSET
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};
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}
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static inline p_region_t CONST pptr_to_paddr_reg(region_t reg)
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{
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return (p_region_t) {
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reg.start - PPTR_BASE_OFFSET, reg.end - PPTR_BASE_OFFSET
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};
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}
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#define paddr_to_pptr ptrFromPAddr
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#define pptr_to_paddr addrFromPPtr
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#define kpptr_to_paddr addrFromKPPtr
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#include <mode/machine.h>
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