Restructure of direct host network bridge.

[palacios.git] / palacios / src / devices / lnx_virtio_balloon.c

diff --git a/palacios/src/devices/lnx_virtio_balloon.c b/palacios/src/devices/lnx_virtio_balloon.c
index 2e2cee1..e936f9e 100644 (file)
--- a/palacios/src/devices/lnx_virtio_balloon.c
+++ b/palacios/src/devices/lnx_virtio_balloon.c
@@ -77,12 +77,9 @@ struct virtio_balloon_state {
 };
 
 
-static int virtio_free(struct vm_device * dev) {
-    return -1;
-}
 
-static int virtio_reset(struct vm_device * dev) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+
+static int virtio_reset(struct virtio_balloon_state * virtio) {
 
     memset(virtio->queue, 0, sizeof(struct virtio_queue) * 2);
 
@@ -119,8 +116,7 @@ static int get_desc_count(struct virtio_queue * q, int index) {
 }
 
 
-static int handle_kick(struct guest_info * core, struct vm_device * dev) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;    
+static int handle_kick(struct guest_info * core, struct virtio_balloon_state * virtio) {
     struct virtio_queue * q = virtio->cur_queue;
 
     PrintDebug("VIRTIO BALLOON KICK: cur_index=%d (mod=%d), avail_index=%d\n", 
@@ -152,7 +148,7 @@ static int handle_kick(struct guest_info * core, struct vm_device * dev) {
            }
 
            /*      
-              if (handle_balloon_op(dev, tmp_desc, buf_desc, status_desc) == -1) {
+              if (handle_balloon_op(virtio, tmp_desc, buf_desc, status_desc) == -1) {
               PrintError("Error handling balloon operation\n");
               return -1;
               }
@@ -184,8 +180,7 @@ static int handle_kick(struct guest_info * core, struct vm_device * dev) {
 }
 
 static int virtio_io_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * private_data) {
-    struct vm_device * dev = (struct vm_device *)private_data;
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)private_data;
     int port_idx = port % virtio->io_range_size;
 
 
@@ -265,7 +260,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
            break;
        case VRING_Q_NOTIFY_PORT:
            PrintDebug("Handling Kick\n");
-           if (handle_kick(core, dev) == -1) {
+           if (handle_kick(core, virtio) == -1) {
                PrintError("Could not handle Balloon Notification\n");
                return -1;
            }
@@ -275,7 +270,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 
            if (virtio->virtio_cfg.status == 0) {
                PrintDebug("Resetting device\n");
-               virtio_reset(dev);
+               virtio_reset(virtio);
            }
 
            break;
@@ -293,8 +288,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 
 
 static int virtio_io_read(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * private_data) {
-    struct vm_device * dev = (struct vm_device *)private_data;
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)private_data;
     int port_idx = port % virtio->io_range_size;
 
 
@@ -365,19 +359,22 @@ static int virtio_io_read(struct guest_info * core, uint16_t port, void * dst, u
 }
 
 
+static int virtio_free(struct virtio_balloon_state * virtio) {
+
+    // unregister from PCI
+
+    V3_Free(virtio);
+    return 0;
+}
 
 
 static struct v3_device_ops dev_ops = {
-    .free = virtio_free,
-    .reset = NULL,
-    .start = NULL,
-    .stop = NULL,
-};
+    .free = (int (*)(void *))virtio_free,
 
+};
 
-static int set_size(struct vm_device * dev, addr_t size) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
 
+static int set_size(struct virtio_balloon_state * virtio, addr_t size) {
     virtio->balloon_cfg.requested_pages = size / PAGE_SIZE; // number of pages
 
     PrintDebug("Requesting %d pages\n", virtio->balloon_cfg.requested_pages);
@@ -390,18 +387,17 @@ static int set_size(struct vm_device * dev, addr_t size) {
 
 
 static int handle_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
-    struct vm_device * dev = (struct vm_device *)priv_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)priv_data;
     int tgt_size = info->vm_regs.rcx;
 
     
-    return set_size(dev, tgt_size);
+    return set_size(virtio, tgt_size);
 }
 
 
 
 static int handle_query_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
-    struct vm_device * dev = (struct vm_device *)priv_data;
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)priv_data;
     
     info->vm_regs.rcx = virtio->balloon_cfg.requested_pages;
     info->vm_regs.rdx = virtio->balloon_cfg.allocated_pages;
@@ -418,7 +414,7 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
     struct vm_device * pci_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
     struct virtio_balloon_state * virtio_state = NULL;
     struct pci_device * pci_dev = NULL;
-    char * name = v3_cfg_val(cfg, "name");
+    char * dev_id = v3_cfg_val(cfg, "ID");
 
     PrintDebug("Initializing VIRTIO Balloon device\n");
 
@@ -428,19 +424,18 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
     }
 
     
-    virtio_state  = (struct virtio_balloon_state *)V3_Malloc(sizeof(struct virtio_balloon_state));
+    virtio_state = (struct virtio_balloon_state *)V3_Malloc(sizeof(struct virtio_balloon_state));
     memset(virtio_state, 0, sizeof(struct virtio_balloon_state));
 
 
-    struct vm_device * dev = v3_allocate_device(name, &dev_ops, virtio_state);
-    if (v3_attach_device(vm, dev) == -1) {
-       PrintError("Could not attach device %s\n", name);
+    struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, virtio_state);
+
+    if (dev == NULL) {
+       PrintError("Could not attach device %s\n", dev_id);
+       V3_Free(virtio_state);
        return -1;
     }
 
-
-
-
     // PCI initialization
     {
        struct v3_pci_bar bars[6];
@@ -475,16 +470,17 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
 
        bars[0].io_read = virtio_io_read;
        bars[0].io_write = virtio_io_write;
-       bars[0].private_data = dev;
+       bars[0].private_data = virtio_state;
        
 
        pci_dev = v3_pci_register_device(pci_bus, PCI_STD_DEVICE, 
                                         0, PCI_AUTO_DEV_NUM, 0,
                                         "LNX_VIRTIO_BALLOON", bars,
-                                        NULL, NULL, NULL, dev);
+                                        NULL, NULL, NULL, virtio_state);
 
        if (!pci_dev) {
            PrintError("Could not register PCI Device\n");
+           v3_remove_device(dev);
            return -1;
        }
        
@@ -508,10 +504,10 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
        virtio_state->pci_bus = pci_bus;
     }
 
-    virtio_reset(dev);
+    virtio_reset(virtio_state);
 
-    v3_register_hypercall(vm, BALLOON_START_HCALL, handle_hcall, dev);
-    v3_register_hypercall(vm, BALLOON_QUERY_HCALL, handle_query_hcall, dev);
+    v3_register_hypercall(vm, BALLOON_START_HCALL, handle_hcall, virtio_state);
+    v3_register_hypercall(vm, BALLOON_QUERY_HCALL, handle_query_hcall, virtio_state);
 
     return 0;
 }