lunaix-os/kernel/device/capability.c

   1 #include <lunaix/device.h>
   2 #include <lunaix/mm/valloc.h>
   3
   4 struct capability_meta*
   5 alloc_capability(int cap, unsigned int size)
   6 {
   7     struct capability_meta* cm = (struct capability_meta*)vzalloc(size);
   8
   9     cm->cap_type = cap;
  10
  11     return cm;
  12 }
  13
  14 void
  15 device_grant_capability(struct device* dev, struct capability_meta* cap)
  16 {
  17     llist_append(&dev->capabilities, &cap->caps);
  18 }
  19
  20 struct capability_meta*
  21 device_get_capability(struct device* dev, unsigned int cap_type)
  22 {
  23     struct capability_meta *pos, *n;
  24
  25     llist_for_each(pos, n, &dev->capabilities, caps) {
  26         if (pos->cap_type == cap_type){
  27             return pos;
  28         }
  29     }
  30
  31     return NULL;
  32 }