mirror of
https://github.com/Bareflank/hypervisor
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86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
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* Bareflank Hypervisor
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*
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* Copyright (C) 2015 Assured Information Security, Inc.
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* Author: Rian Quinn <quinnr@ainfosec.com>
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* Author: Brendan Kerrigan <kerriganb@ainfosec.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MEMORY_H
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#define MEMORY_H
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#ifndef KERNEL
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#include <stdint.h>
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#else
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#include <types.h>
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#endif
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#include <constants.h>
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#include <error_codes.h>
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#pragma pack(push, 1)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Memory Types
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*/
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#define MEMORY_TYPE_R 0x1
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#define MEMORY_TYPE_W 0x2
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#define MEMORY_TYPE_E 0x4
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/**
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* Memory Descriptor
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*
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* A memory descriptor provides information about a block of memory.
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* Typically, each page of memory that the VMM uses will have a memory
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* descriptor associated with it. The VMM will use this information to create
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* its resources, as well as generate page tables as needed.
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*
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* @var memory_descriptor::phys
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* the starting physical address of the block of memory
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* @var memory_descriptor::virt
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* the starting virtual address of the block of memory
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* @var memory_descriptor::type
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* the type of memory block. This is likely architecture specific as
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* this holds information about access rights, etc...
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*/
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struct memory_descriptor
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{
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uint64_t phys;
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uint64_t virt;
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uint8_t type;
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};
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/**
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* Add Memory Descriptor
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*
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* This is used by the driver entry to add an MD to VMM. The driver entry
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* will need to collect memory descriptors for every page of memory that the
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* VMM is using so that the memory manager can provide mappings as needed.
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*/
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typedef int64_t (*add_md_t)(struct memory_descriptor *md);
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#ifdef __cplusplus
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}
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#endif
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#pragma pack(pop)
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#endif
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