1/*
2 * Copyright 2017, Data61
3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO)
4 * ABN 41 687 119 230.
5 *
6 * This software may be distributed and modified according to the terms of
7 * the BSD 2-Clause license. Note that NO WARRANTY is provided.
8 * See "LICENSE_BSD2.txt" for details.
9 *
10 * @TAG(DATA61_BSD)
11 */
12
13#pragma once
14
15#include <sel4/types.h>
16#include <assert.h>
17#include <autoconf.h>
18#include <sel4vka/gen_config.h>
19#include <utils/util.h>
20#include <vka/sel4_arch/kobject_t.h>
21
22enum _x86_kobject_type {
23    KOBJECT_IO_PAGETABLE = KOBJECT_MODE_NUM_TYPES,
24    KOBJECT_PAGE_DIRECTORY,
25    KOBJECT_PAGE_TABLE,
26    KOBJECT_ARCH_NUM_TYPES,
27};
28
29/*
30 * Get the size (in bits) of the untyped memory required to
31 * create an object of the given size.
32 */
33static inline seL4_Word arch_kobject_get_size(kobject_t type, seL4_Word objectSize)
34{
35    switch (type) {
36    case KOBJECT_IO_PAGETABLE:
37        return seL4_IOPageTableBits;
38    case KOBJECT_FRAME:
39        switch (objectSize) {
40        case seL4_PageBits:
41        case seL4_LargePageBits:
42            return objectSize;
43        }
44    /* If frame size was unknown fall through to default case as it
45     * might be a mode specific frame size */
46    default:
47        return x86_mode_kobject_get_size(type, objectSize);
48    }
49}
50
51static inline seL4_Word arch_kobject_get_type(int type, seL4_Word objectSize)
52{
53    switch (type) {
54    case KOBJECT_PAGE_DIRECTORY:
55        return seL4_X86_PageDirectoryObject;
56    case KOBJECT_PAGE_TABLE:
57        return seL4_X86_PageTableObject;
58    case KOBJECT_FRAME:
59        switch (objectSize) {
60        case seL4_PageBits:
61            return seL4_X86_4K;
62        case seL4_LargePageBits:
63            return seL4_X86_LargePageObject;
64        default:
65            return x86_mode_kobject_get_type(type, objectSize);
66        }
67    case KOBJECT_IO_PAGETABLE:
68        return seL4_X86_IOPageTableObject;
69    default:
70        return x86_mode_kobject_get_type(type, objectSize);
71    }
72}
73
74