forked from garasubo/T-Visor
-
Notifications
You must be signed in to change notification settings - Fork 0
/
vint_sender.c
54 lines (46 loc) · 1.28 KB
/
vint_sender.c
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
#include "basic.h"
#include "type.h"
#include "rbtree.h"
#include "vm.h"
#include "vint_sender.h"
#include "debug.h"
static int comp_func(void *a, void *b){
W na = (W)a;
W nb = (W)b;
return nb-na;
}
static tree_t *tree; // send_id & irq_num -> permit_mask
void vint_sender_init(void){
tree = rbtree_alloc(comp_func);
}
void vint_sender_interface(void){
UW *sp = vcpu_get_current_sp()->reg;
UB sid = vcpu_get_executing()->id;
UB rid = sp[1];
UHW irq_id = sp[2];
UW key = ((UW)rid) << 16 | irq_id;
node_t *node = rbtree_search(tree, (void *)key);
if(node){
UW mask = (UW)node->val;
if(mask&(1 << sid)){
T_VM *vm = vm_find_by_id(rid);
if(virtual_gic_send_software_int(vm->vgic, irq_id)){
// do nothing
} else {
}
}
} else {
tv_abort("this call is not registered");
}
}
void vint_sender_add_permission(UB sender_id, UB receiver_id, UHW irq_id){
UW key = ((UW)receiver_id) << 16 | irq_id;
node_t *node = rbtree_search(tree, (void *)key);
if(node){
UW mask = (UW)node->val | (1 << sender_id);
rbtree_insert(tree, (void *)key, (void *)mask);
}
else {
rbtree_insert(tree, (void *)key, (void *)(1 << sender_id));
}
}