hw/xen/xen_devconfig.c

   1 #include "qemu/osdep.h"
   2 #include "hw/xen/xen-legacy-backend.h"
   3 #include "qemu/option.h"
   4 #include "sysemu/blockdev.h"
   5 #include "sysemu/sysemu.h"
   6
   7 /* ------------------------------------------------------------- */
   8
   9 static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev,
  10                                char *fe, char *be, int len)
  11 {
  12     char *dom;
  13
  14     dom = qemu_xen_xs_get_domain_path(xenstore, xen_domid);
  15     snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
  16     free(dom);
  17
  18     dom = qemu_xen_xs_get_domain_path(xenstore, 0);
  19     snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
  20     free(dom);
  21
  22     xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE);
  23     xenstore_mkdir(be, XS_PERM_READ);
  24     return 0;
  25 }
  26
  27 static int xen_config_dev_all(char *fe, char *be)
  28 {
  29     /* frontend */
  30     if (xen_protocol)
  31         xenstore_write_str(fe, "protocol", xen_protocol);
  32
  33     xenstore_write_int(fe, "state",           XenbusStateInitialising);
  34     xenstore_write_int(fe, "backend-id",      0);
  35     xenstore_write_str(fe, "backend",         be);
  36
  37     /* backend */
  38     xenstore_write_str(be, "domain",          qemu_name ? qemu_name : "no-name");
  39     xenstore_write_int(be, "online",          1);
  40     xenstore_write_int(be, "state",           XenbusStateInitialising);
  41     xenstore_write_int(be, "frontend-id",     xen_domid);
  42     xenstore_write_str(be, "frontend",        fe);
  43
  44     return 0;
  45 }
  46
  47 /* ------------------------------------------------------------- */
  48
  49 int xen_config_dev_nic(NICInfo *nic)
  50 {
  51     char fe[256], be[256];
  52     char mac[20];
  53     int vlan_id = -1;
  54
  55     net_hub_id_for_client(nic->netdev, &vlan_id);
  56     snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x",
  57              nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2],
  58              nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]);
  59     xen_pv_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", vlan_id, mac);
  60     xen_config_dev_dirs("vif", "qnic", vlan_id, fe, be, sizeof(fe));
  61
  62     /* frontend */
  63     xenstore_write_int(fe, "handle",     vlan_id);
  64     xenstore_write_str(fe, "mac",        mac);
  65
  66     /* backend */
  67     xenstore_write_int(be, "handle",     vlan_id);
  68     xenstore_write_str(be, "mac",        mac);
  69
  70     /* common stuff */
  71     return xen_config_dev_all(fe, be);
  72 }
  73
  74 int xen_config_dev_vfb(int vdev, const char *type)
  75 {
  76     char fe[256], be[256];
  77
  78     xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe));
  79
  80     /* backend */
  81     xenstore_write_str(be, "type",  type);
  82
  83     /* common stuff */
  84     return xen_config_dev_all(fe, be);
  85 }
  86
  87 int xen_config_dev_vkbd(int vdev)
  88 {
  89     char fe[256], be[256];
  90
  91     xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe));
  92     return xen_config_dev_all(fe, be);
  93 }
  94
  95 int xen_config_dev_console(int vdev)
  96 {
  97     char fe[256], be[256];
  98
  99     xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe));
 100     return xen_config_dev_all(fe, be);
 101 }