#include <palacios/vmm.h>
#include <palacios/vmm_decoder.h>
+#ifdef V3_CONFIG_CHECKPOINT
+#include <palacios/vmm_checkpoint.h>
+#endif
+
-#ifndef CONFIG_DEBUG_DEV_MGR
+#ifndef V3_CONFIG_DEBUG_DEV_MGR
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
struct v3_device_info * tmp_dev = __start__v3_devices;
int i = 0;
-#ifdef CONFIG_DEBUG_DEV_MGR
+#ifdef V3_CONFIG_DEBUG_DEV_MGR
{
int num_devices = (__stop__v3_devices - __start__v3_devices) / sizeof(struct v3_device_info);
PrintDebug("%d Virtual devices registered with Palacios\n", num_devices);
while (tmp_dev != __stop__v3_devices) {
- PrintDebug("Device: %s\n", tmp_dev->name);
+ V3_Print("Registering Device: %s\n", tmp_dev->name);
if (v3_htable_search(master_dev_table, (addr_t)(tmp_dev->name))) {
PrintError("Multiple instance of device (%s)\n", tmp_dev->name);
return 0;
}
+#ifdef V3_CONFIG_CHECKPOINT
+
+int v3_save_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) {
+ struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
+ struct vm_device * dev;
+ struct v3_chkpt_ctx * dev_mgr_ctx = NULL;
+
+ uint32_t num_saved_devs = 0;
+ uint32_t table_len = mgr->num_devs * 32;
+ char * name_table = NULL;
+ uint32_t tbl_offset = 0;
+
+ name_table = V3_Malloc(table_len);
+
+ if (!name_table) {
+ PrintError("Unable to allocate space in device manager save\n");
+ return -1;
+ }
+
+ memset(name_table, 0, table_len);
+
+ dev_mgr_ctx = v3_chkpt_open_ctx(chkpt, NULL, "devices");
+
+ if (!dev_mgr_ctx) {
+ PrintError("Unable to open device manager context\n");
+ V3_Free(name_table);
+ return -1;
+ }
+
+ list_for_each_entry(dev, &(mgr->dev_list), dev_link) {
+ if (dev->ops->save) {
+ strncpy(name_table + tbl_offset, dev->name, 32);
+ tbl_offset += 32;
+ num_saved_devs++;
+ } else {
+ PrintDebug("Skipping device %s\n");
+ }
+ }
+
+ if (v3_chkpt_save(dev_mgr_ctx, "num_devs", 4, &num_saved_devs) == -1) {
+ PrintError("Unable to store num_devs\n");
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+ V3_Free(name_table);
+ return -1;
+ }
+
+ if (v3_chkpt_save(dev_mgr_ctx, "names", num_saved_devs*32, name_table) == -1) {
+ PrintError("Unable to store names of devices\n");
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+ V3_Free(name_table);
+ return -1;
+ }
+
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+
+ V3_Free(name_table);
+
+ list_for_each_entry(dev, &(mgr->dev_list), dev_link) {
+ if (dev->ops->save) {
+ struct v3_chkpt_ctx * dev_ctx = NULL;
+
+ V3_Print("Saving state for device (%s)\n", dev->name);
+
+ dev_ctx = v3_chkpt_open_ctx(chkpt, NULL, dev->name);
+
+ if (!dev_ctx) {
+ PrintError("Unable to open context for device %s\n",dev->name);
+ return -1;
+ }
+
+ if (dev->ops->save(dev_ctx, dev->private_data)) {
+ PrintError("Unable t save device %s\n",dev->name);
+ v3_chkpt_close_ctx(dev_ctx);
+ return -1;
+ }
+
+ v3_chkpt_close_ctx(dev_ctx);
+
+ // Error checking??
+ } else {
+ PrintError("Error: %s save() not implemented\n", dev->name);
+ }
+ }
+
+ return 0;
+}
+
+
+int v3_load_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) {
+ struct vm_device * dev;
+ struct v3_chkpt_ctx * dev_mgr_ctx = NULL;
+ uint32_t num_devs = 0;
+ char * name_table = NULL;
+ int i = 0;
+
+ dev_mgr_ctx = v3_chkpt_open_ctx(chkpt, NULL, "devices");
+
+ if (!dev_mgr_ctx) {
+ PrintError("Unable to open devices for load\n");
+ return -1;
+ }
+
+ if (v3_chkpt_load(dev_mgr_ctx, "num_devs", 4, &num_devs) == -1) {
+ PrintError("Unable to load num_devs\n");
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+ return -1;
+ }
+
+ V3_Print("Loading State for %d devices\n", num_devs);
+
+ name_table = V3_Malloc(32 * num_devs);
+
+ if (!name_table) {
+ PrintError("Unable to allocate space for device table\n");
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+ return -1;
+ }
+
+ if (v3_chkpt_load(dev_mgr_ctx, "names", 32 * num_devs, name_table) == -1) {
+ PrintError("Unable to load device name table\n");
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+ V3_Free(name_table);
+ }
+
+ v3_chkpt_close_ctx(dev_mgr_ctx);
+
+ for (i = 0; i < num_devs; i++) {
+ char * name = &(name_table[i * 32]);
+ struct v3_chkpt_ctx * dev_ctx = NULL;
+ dev = v3_find_dev(vm, name);
+
+ if (!dev) {
+ PrintError("Tried to load state into non existant device: %s\n", name);
+ continue;
+ }
+
+ if (!dev->ops->load) {
+ PrintError("Error Device (%s) does not support load operation\n", name);
+ continue;
+ }
+
+ dev_ctx = v3_chkpt_open_ctx(chkpt, NULL, name);
+
+ if (!dev_ctx) {
+ PrintError("Error missing device context (%s)\n", name);
+ continue;
+ }
+
+
+ if (dev->ops->load(dev_ctx, dev->private_data)) {
+ PrintError("Load of device %s failed\n",name);
+ }
+
+ v3_chkpt_close_ctx(dev_ctx);
+ }
+
+ V3_Free(name_table);
+
+ return 0;
+}
+
+
+#endif
+
static int free_frontends(struct v3_vm_info * vm, struct vmm_dev_mgr * mgr);
int v3_deinit_dev_mgr(struct v3_vm_info * vm) {
free_frontends(vm, mgr);
-
-
v3_free_htable(mgr->dev_table, 0, 0);
return 0;
struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
struct vm_device * dev = NULL;
+
+ // Check if we already registered a device of the same name
+ if (v3_htable_search(mgr->dev_table, (addr_t)name) != (addr_t)NULL) {
+ PrintError("Device with name (%s) already registered with VM\n", name);
+ return NULL;
+ }
+
dev = (struct vm_device *)V3_Malloc(sizeof(struct vm_device));
if (dev == NULL) {
