mem.c 1.29 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
/*
 * mem.c
 *
 * Isolated liblcd page allocator and related
 * code.
 */

#include <lcd_config/pre_hook.h>

#include <liblcd/mem.h>

#include <lcd_config/post_hook.h>

/* VOLUNTEERING -------------------------------------------------- */

int lcd_volunteer_pages(struct page *base, unsigned int order,
			cptr_t *slot_out)
{
	unsigned long size;
	return lcd_phys_to_cptr(
		lcd_gva2gpa(__gva((unsigned long)lcd_page_address(base))), 
		slot_out, &size);
}

void lcd_unvolunteer_pages(cptr_t pages)
{
	return;
}

int lcd_volunteer_dev_mem(gpa_t base, unsigned int order,
			cptr_t *slot_out)
{
	unsigned long size;
	return lcd_phys_to_cptr(base, slot_out, &size);
}

void lcd_unvolunteer_dev_mem(cptr_t devmem)
{
	return;
}

int lcd_volunteer_vmalloc_mem(gva_t base, unsigned int order,
			cptr_t *slot_out)
{
	unsigned long size;
	return lcd_virt_to_cptr(base, slot_out, &size);
}

void lcd_unvolunteer_vmalloc_mem(cptr_t vmalloc_mem)
{
	return;
}

/* ADDRESS TRANSLATION -------------------------------------------------- */

gpa_t lcd_gva2gpa(gva_t gva)
{
	return __gpa(LCD_PHYS_BASE + (gva_val(gva) - LCD_VIRT_BASE));
}

gva_t lcd_gpa2gva(gpa_t gpa)
{
	return __gva(LCD_VIRT_BASE + (gpa_val(gpa) - LCD_PHYS_BASE));
}

/* INIT/EXIT -------------------------------------------------- */

int lcd_mem_init(void)
{


}