added initial global shutdown functionality

[palacios.git] / palacios / src / palacios / vmm_dev_mgr.c

diff --git a/palacios/src/palacios/vmm_dev_mgr.c b/palacios/src/palacios/vmm_dev_mgr.c
index 5fafbdd..f0554ea 100644 (file)
--- a/palacios/src/palacios/vmm_dev_mgr.c
+++ b/palacios/src/palacios/vmm_dev_mgr.c
@@ -44,7 +44,7 @@ static int dev_eq_fn(addr_t key1, addr_t key2) {
 }
 
 
-int v3_init_devices() {
+int V3_init_devices() {
     extern struct v3_device_info __start__v3_devices[];
     extern struct v3_device_info __stop__v3_devices[];
     struct v3_device_info * tmp_dev =  __start__v3_devices;
@@ -86,6 +86,12 @@ int v3_init_devices() {
 }
 
 
+int V3_deinit_devices() {    
+    v3_free_htable(master_dev_table, 0, 0);
+    return 0;
+}
+
+
 int v3_init_dev_mgr(struct v3_vm_info * vm) {
     struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
 
@@ -108,19 +114,28 @@ int v3_init_dev_mgr(struct v3_vm_info * vm) {
 }
 
 
-int v3_dev_mgr_deinit(struct v3_vm_info * vm) {
-    struct vm_device * dev;
+int v3_free_vm_devices(struct v3_vm_info * vm) {
     struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
+    struct vm_device * dev;
     struct vm_device * tmp;
 
     list_for_each_entry_safe(dev, tmp, &(mgr->dev_list), dev_link) {
-       v3_detach_device(dev);
+       v3_remove_device(dev);
     }
 
-    v3_free_htable(mgr->blk_table, 0, 0);
-    v3_free_htable(mgr->net_table, 0, 0);
-    v3_free_htable(mgr->char_table, 0, 0);
-    v3_free_htable(mgr->cons_table, 0, 0);
+    return 0;
+}
+
+static int free_frontends(struct v3_vm_info * vm, struct vmm_dev_mgr * mgr);
+
+int v3_deinit_dev_mgr(struct v3_vm_info * vm) {
+    struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
+    
+    // clear frontend lists
+
+    free_frontends(vm, mgr);
+
+
 
     v3_free_htable(mgr->dev_table, 0, 0);
 
@@ -149,10 +164,6 @@ int v3_create_device(struct v3_vm_info * vm, const char * dev_name, v3_cfg_tree_
 }
 
 
-void v3_free_device(struct vm_device * dev) {
-    V3_Free(dev);
-}
-
 
 
 struct vm_device * v3_find_dev(struct v3_vm_info * vm, const char * dev_name) {
@@ -226,11 +237,19 @@ int v3_dev_unhook_io(struct vm_device * dev, uint16_t port) {
 
 
 
-int v3_detach_device(struct vm_device * dev) {
+int v3_remove_device(struct vm_device * dev) {
     struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr);
+    struct dev_io_hook * io_hook = NULL;
+    struct dev_io_hook * tmp;
+
+    list_for_each_entry_safe(io_hook, tmp, &(dev->io_hooks), node) {
+       v3_unhook_io_port(dev->vm, io_hook->port);          
+       list_del(&(io_hook->node));
+       V3_Free(io_hook);    
+    }
 
     if (dev->ops->free) {
-       dev->ops->free(dev);
+       dev->ops->free(dev->private_data);
     } else {
        PrintError("Error: %s free() not implemented\n",  dev->name);
     }
@@ -240,17 +259,23 @@ int v3_detach_device(struct vm_device * dev) {
 
     dev->vm = NULL;
 
-    v3_free_device(dev);
+    V3_Free(dev);
     return -1;
 }
 
 
-struct vm_device * v3_allocate_device(char * name, 
-                                     struct v3_device_ops * ops, 
-                                     void * private_data) {
+struct vm_device * v3_add_device(struct v3_vm_info * vm,
+                                char * name, 
+                                struct v3_device_ops * ops, 
+                                void * private_data) {
+    struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
     struct vm_device * dev = NULL;
 
-    dev = (struct vm_device*)V3_Malloc(sizeof(struct vm_device));
+    dev = (struct vm_device *)V3_Malloc(sizeof(struct vm_device));
+
+    if (dev == NULL) {
+       return NULL;
+    }
 
     INIT_LIST_HEAD(&(dev->io_hooks));
 
@@ -258,28 +283,17 @@ struct vm_device * v3_allocate_device(char * name,
     dev->ops = ops;
     dev->private_data = private_data;
 
-    dev->vm = NULL;
-
-    return dev;
-}
-
-
-int v3_attach_device(struct v3_vm_info * vm, struct vm_device * dev ) {
-    struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
-
     dev->vm = vm;
 
     list_add(&(dev->dev_link), &(mgr->dev_list));
     mgr->num_devs++;
 
-
     v3_htable_insert(mgr->dev_table, (addr_t)(dev->name), (addr_t)dev);
 
-    return 0;
+    return dev;
 }
 
 
-
 void v3_print_dev_mgr(struct v3_vm_info * vm) {
     struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
     struct vm_device * dev;
@@ -548,3 +562,45 @@ int v3_dev_connect_char(struct v3_vm_info * vm,
     return 0;
 }
 
+
+
+static int free_frontends(struct v3_vm_info * vm, struct vmm_dev_mgr * mgr) {
+    struct char_frontend * chr = NULL;
+    struct char_frontend * tmp_chr = NULL;
+    struct cons_frontend * cons = NULL;
+    struct cons_frontend * tmp_cons = NULL;
+    struct net_frontend * net = NULL;
+    struct net_frontend * tmp_net = NULL;
+    struct blk_frontend * blk = NULL;
+    struct blk_frontend * tmp_blk = NULL;
+
+
+
+    list_for_each_entry_safe(chr, tmp_chr, &(mgr->char_list), char_node) {
+       list_del(&(chr->char_node));
+       V3_Free(chr);
+    }
+
+    list_for_each_entry_safe(cons, tmp_cons, &(mgr->cons_list), cons_node) {
+       list_del(&(cons->cons_node));
+       V3_Free(cons);
+    }
+
+    list_for_each_entry_safe(net, tmp_net, &(mgr->net_list), net_node) {
+       list_del(&(net->net_node));
+       V3_Free(net);
+    }
+
+    list_for_each_entry_safe(blk, tmp_blk, &(mgr->blk_list), blk_node) {
+       list_del(&(blk->blk_node));
+       V3_Free(blk);
+    }
+
+    v3_free_htable(mgr->blk_table, 0, 0);
+    v3_free_htable(mgr->net_table, 0, 0);
+    v3_free_htable(mgr->char_table, 0, 0);
+    v3_free_htable(mgr->cons_table, 0, 0);
+
+
+    return 0;
+}