bd5e38c6de
There are SoCs that have different memory maps for device and driver. Therefore the shared memory between them has different values and we need to convert the addresses. This commit introduces address translation support for OpenAMP: - implements the address translation functions; - returns the I/O operations used for address translation. The ops can be used in Libmetal (see metal_io_init()). Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
36 lines
887 B
C
36 lines
887 B
C
/*
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* Copyright 2025 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <metal/io.h>
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/*
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* Description of a single physical page from the I/O region.
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* Local address is remap to remote address -
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* according to the memory map from the reference manual.
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*/
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struct phys_page_info {
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const metal_phys_addr_t addr; /* local address */
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const metal_phys_addr_t remote_addr; /* remote address */
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const size_t size;
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};
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/*
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* Table of base physical addresses, local and remote,
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* of the pages in the I/O region, along with size (no_pages)
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*/
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struct phys_pages {
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size_t no_pages; /* number of pages */
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const struct phys_page_info *map; /* table of pages */
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};
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/**
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* @brief Return generic I/O operations
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*
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* @param phys Physical base address of the I/O region
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* @return metal_io_ops struct
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*/
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const struct metal_io_ops *addr_translation_get_ops(metal_phys_addr_t phys);
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