diff options
Diffstat (limited to 'hw/xen/xen_devconfig.c')
| -rw-r--r-- | hw/xen/xen_devconfig.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/hw/xen/xen_devconfig.c b/hw/xen/xen_devconfig.c new file mode 100644 index 000000000..46ee4a7f0 --- /dev/null +++ b/hw/xen/xen_devconfig.c @@ -0,0 +1,129 @@ +#include "qemu/osdep.h" +#include "hw/xen/xen-legacy-backend.h" +#include "qemu/option.h" +#include "sysemu/blockdev.h" +#include "sysemu/sysemu.h" + +/* ------------------------------------------------------------- */ + +static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev, + char *fe, char *be, int len) +{ + char *dom; + + dom = xs_get_domain_path(xenstore, xen_domid); + snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev); + free(dom); + + dom = xs_get_domain_path(xenstore, 0); + snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev); + free(dom); + + xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE); + xenstore_mkdir(be, XS_PERM_READ); + return 0; +} + +static int xen_config_dev_all(char *fe, char *be) +{ + /* frontend */ + if (xen_protocol) + xenstore_write_str(fe, "protocol", xen_protocol); + + xenstore_write_int(fe, "state", XenbusStateInitialising); + xenstore_write_int(fe, "backend-id", 0); + xenstore_write_str(fe, "backend", be); + + /* backend */ + xenstore_write_str(be, "domain", qemu_name ? qemu_name : "no-name"); + xenstore_write_int(be, "online", 1); + xenstore_write_int(be, "state", XenbusStateInitialising); + xenstore_write_int(be, "frontend-id", xen_domid); + xenstore_write_str(be, "frontend", fe); + + return 0; +} + +/* ------------------------------------------------------------- */ + +int xen_config_dev_blk(DriveInfo *disk) +{ + char fe[256], be[256], device_name[32]; + int vdev = 202 * 256 + 16 * disk->unit; + int cdrom = disk->media_cd; + const char *devtype = cdrom ? "cdrom" : "disk"; + const char *mode = cdrom ? "r" : "w"; + const char *filename = qemu_opt_get(disk->opts, "file"); + + snprintf(device_name, sizeof(device_name), "xvd%c", 'a' + disk->unit); + xen_pv_printf(NULL, 1, "config disk %d [%s]: %s\n", + disk->unit, device_name, filename); + xen_config_dev_dirs("vbd", "qdisk", vdev, fe, be, sizeof(fe)); + + /* frontend */ + xenstore_write_int(fe, "virtual-device", vdev); + xenstore_write_str(fe, "device-type", devtype); + + /* backend */ + xenstore_write_str(be, "dev", device_name); + xenstore_write_str(be, "type", "file"); + xenstore_write_str(be, "params", filename); + xenstore_write_str(be, "mode", mode); + + /* common stuff */ + return xen_config_dev_all(fe, be); +} + +int xen_config_dev_nic(NICInfo *nic) +{ + char fe[256], be[256]; + char mac[20]; + int vlan_id = -1; + + net_hub_id_for_client(nic->netdev, &vlan_id); + snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", + nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2], + nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]); + xen_pv_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", vlan_id, mac); + xen_config_dev_dirs("vif", "qnic", vlan_id, fe, be, sizeof(fe)); + + /* frontend */ + xenstore_write_int(fe, "handle", vlan_id); + xenstore_write_str(fe, "mac", mac); + + /* backend */ + xenstore_write_int(be, "handle", vlan_id); + xenstore_write_str(be, "mac", mac); + + /* common stuff */ + return xen_config_dev_all(fe, be); +} + +int xen_config_dev_vfb(int vdev, const char *type) +{ + char fe[256], be[256]; + + xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe)); + + /* backend */ + xenstore_write_str(be, "type", type); + + /* common stuff */ + return xen_config_dev_all(fe, be); +} + +int xen_config_dev_vkbd(int vdev) +{ + char fe[256], be[256]; + + xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe)); + return xen_config_dev_all(fe, be); +} + +int xen_config_dev_console(int vdev) +{ + char fe[256], be[256]; + + xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe)); + return xen_config_dev_all(fe, be); +} |