LXR qemu/hw/xen/xen

   1#include "qemu/osdep.h"
   2#include "hw/xen/xen-legacy-backend.h"
   3#include "qemu/option.h"
   4#include "sysemu/blockdev.h"
   5
   6/* ------------------------------------------------------------- */
   7
   8static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev,
   9                               char *fe, char *be, int len)
  10{
  11    char *dom;
  12
  13    dom = xs_get_domain_path(xenstore, xen_domid);
  14    snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
  15    free(dom);
  16
  17    dom = xs_get_domain_path(xenstore, 0);
  18    snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
  19    free(dom);
  20
  21    xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE);
  22    xenstore_mkdir(be, XS_PERM_READ);
  23    return 0;
  24}
  25
  26static int xen_config_dev_all(char *fe, char *be)
  27{
  28    /* frontend */
  29    if (xen_protocol)
  30        xenstore_write_str(fe, "protocol", xen_protocol);
  31
  32    xenstore_write_int(fe, "state",           XenbusStateInitialising);
  33    xenstore_write_int(fe, "backend-id",      0);
  34    xenstore_write_str(fe, "backend",         be);
  35
  36    /* backend */
  37    xenstore_write_str(be, "domain",          qemu_name ? qemu_name : "no-name");
  38    xenstore_write_int(be, "online",          1);
  39    xenstore_write_int(be, "state",           XenbusStateInitialising);
  40    xenstore_write_int(be, "frontend-id",     xen_domid);
  41    xenstore_write_str(be, "frontend",        fe);
  42
  43    return 0;
  44}
  45
  46/* ------------------------------------------------------------- */
  47
  48int xen_config_dev_blk(DriveInfo *disk)
  49{
  50    char fe[256], be[256], device_name[32];
  51    int vdev = 202 * 256 + 16 * disk->unit;
  52    int cdrom = disk->media_cd;
  53    const char *devtype = cdrom ? "cdrom" : "disk";
  54    const char *mode    = cdrom ? "r"     : "w";
  55    const char *filename = qemu_opt_get(disk->opts, "file");
  56
  57    snprintf(device_name, sizeof(device_name), "xvd%c", 'a' + disk->unit);
  58    xen_pv_printf(NULL, 1, "config disk %d [%s]: %s\n",
  59                  disk->unit, device_name, filename);
  60    xen_config_dev_dirs("vbd", "qdisk", vdev, fe, be, sizeof(fe));
  61
  62    /* frontend */
  63    xenstore_write_int(fe, "virtual-device",  vdev);
  64    xenstore_write_str(fe, "device-type",     devtype);
  65
  66    /* backend */
  67    xenstore_write_str(be, "dev",             device_name);
  68    xenstore_write_str(be, "type",            "file");
  69    xenstore_write_str(be, "params",          filename);
  70    xenstore_write_str(be, "mode",            mode);
  71
  72    /* common stuff */
  73    return xen_config_dev_all(fe, be);
  74}
  75
  76int xen_config_dev_nic(NICInfo *nic)
  77{
  78    char fe[256], be[256];
  79    char mac[20];
  80    int vlan_id = -1;
  81
  82    net_hub_id_for_client(nic->netdev, &vlan_id);
  83    snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x",
  84             nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2],
  85             nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]);
  86    xen_pv_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", vlan_id, mac);
  87    xen_config_dev_dirs("vif", "qnic", vlan_id, fe, be, sizeof(fe));
  88
  89    /* frontend */
  90    xenstore_write_int(fe, "handle",     vlan_id);
  91    xenstore_write_str(fe, "mac",        mac);
  92
  93    /* backend */
  94    xenstore_write_int(be, "handle",     vlan_id);
  95    xenstore_write_str(be, "mac",        mac);
  96
  97    /* common stuff */
  98    return xen_config_dev_all(fe, be);
  99}
 100
 101int xen_config_dev_vfb(int vdev, const char *type)
 102{
 103    char fe[256], be[256];
 104
 105    xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe));
 106
 107    /* backend */
 108    xenstore_write_str(be, "type",  type);
 109
 110    /* common stuff */
 111    return xen_config_dev_all(fe, be);
 112}
 113
 114int xen_config_dev_vkbd(int vdev)
 115{
 116    char fe[256], be[256];
 117
 118    xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe));
 119    return xen_config_dev_all(fe, be);
 120}
 121
 122int xen_config_dev_console(int vdev)
 123{
 124    char fe[256], be[256];
 125
 126    xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe));
 127    return xen_config_dev_all(fe, be);
 128}
 129