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
73
74
75
76
77
78
79
80
|
#include "kvm/framebuffer.h"
#include "kvm/kvm.h"
#include <linux/kernel.h>
#include <linux/list.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <errno.h>
static LIST_HEAD(framebuffers);
struct framebuffer *fb__register(struct framebuffer *fb)
{
INIT_LIST_HEAD(&fb->node);
list_add(&fb->node, &framebuffers);
return fb;
}
int fb__attach(struct framebuffer *fb, struct fb_target_operations *ops)
{
if (fb->nr_targets >= FB_MAX_TARGETS)
return -ENOSPC;
fb->targets[fb->nr_targets++] = ops;
return 0;
}
static int start_targets(struct framebuffer *fb)
{
unsigned long i;
for (i = 0; i < fb->nr_targets; i++) {
struct fb_target_operations *ops = fb->targets[i];
int err = 0;
if (ops->start)
err = ops->start(fb);
if (err)
return err;
}
return 0;
}
int fb__init(struct kvm *kvm)
{
struct framebuffer *fb;
list_for_each_entry(fb, &framebuffers, node) {
int err;
err = start_targets(fb);
if (err)
return err;
}
return 0;
}
firmware_init(fb__init);
int fb__exit(struct kvm *kvm)
{
struct framebuffer *fb;
list_for_each_entry(fb, &framebuffers, node) {
u32 i;
for (i = 0; i < fb->nr_targets; i++)
if (fb->targets[i]->stop)
fb->targets[i]->stop(fb);
munmap(fb->mem, fb->mem_size);
}
return 0;
}
firmware_exit(fb__exit);
|
